The Small Group Sessions are indicated as follows:
BB=Barney Bigard Co=Coronets CW=Cootie Williams DE=Duke Ellington
GS=Gotham Stompers JH=Johnny Hodges RS=Rex Stewart SG=Sonny Greer

Titles in {brackets} are not currently accepted by
discographers as genuine Ellington recordings, but have appeared on Ellington albums or in old discographies.

Date	Title Composer Vocalist	Matrix	Original Release	CD
	Ocht O'Clock Rock see Acht O'Clock Rock
	Oclupaca [Duke Ellington]
5nov68	Oclupaca [The Latin American Suite]		Fantasy F-8419	LAS:1
	Oh Babe! Maybe Someday [Duke Ellington]
28feb36	Oh Babe! Maybe Someday [Ivie Anderson, vocal]	B18740-1	Brunswick 7667	C36-37:3
late jun37	Oh Babe! Maybe Someday [from film Record Making With Duke]			100dvd:2 DEIHdvd:13
late jun37	Oh Babe! Maybe Someday [from film Record Making With Duke]			100dvd:2 DEIHdvd:13
late jun37	Oh Babe! Maybe Someday [from film Record Making With Duke] [Ivie Anderson, vocal]			100dvd:2 DEIHdvd:13
24mar38	Oh Babe! Maybe Someday [Ivie Anderson, vocal]		Jazz Archives 12	CC1:5
5may38	Oh Babe! Maybe Someday [Ivie Anderson, vocal]		Jazz Panorama LP-14 Max MLP-1002	pending
13sep40	Oh Babe! Maybe Someday [Ivie Anderson, vocal]		Jazz Supreme 705	***
7nov40	Oh Babe! Maybe Someday [Ivie Anderson, vocal]			Fargo:2/5
	Oh How I Love My Darling [Duke Ellington-Jo Trent]
nov24	Oh How I Love My Darling [Sonny Greer, vocal]	T2008-1	Blu-Disc 1003-A	M1:6 AT1:2
	Oh! Lady Be Good [George Gershwin/Ira Gershwin]
19may55	Oh! Lady Be Good [Jimmy Grissom, vocal]	14104-7	Pickwick SPC-3390	CCR:5/16
4mar58	Oh! Lady Be Good			PC:2/15
	Oh Well [Luther Henderson]
15dec53	Oh Well [Jimmy Grissom, vocal]	20277-1	Mosiac MQ8-160	C53v2:12 CCR:3/4
	Oklahoma Stomp [Duke Ellington]
29oct29	Oklahoma Stomp	E31372-A	Vocalion 1449	M8:15 C29-30:14
29oct29	Oklahoma Stomp	E31372-B	MCA 1374	M8:16 AT1:23
	Ol' Man River [Jerome Kern/Oscar Hammerstein]
4apr38	Ol' Man River [CW] [Jerry Kruger, vocal]	M804-1	Vocalion 4086	C38v2:2 SG2:1/8 SGS:4/13
	The Old Circus Train Turn Around Blues [Duke Ellington]
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/1
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/2
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/3
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/4
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/5
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/6
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/7
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/14
28jul66	The Old Circus Train Turn Around Blues [rehearsal]		Verve	Cote:8/15
28jul66	The Old Circus Train Turn Around Blues		Verve V-4072-2	Cote:5/1
29jul66	The Old Circus Train Turn Around Blues		Verve	Cote:7/12
18aug66	The Old Circus Train Turn Around Blues	-5	Music Masters 5041-2C	NBRR:1
24sep66	The Old Circus Train Turn Around Blues		Status	Greek:7
	Old King Dooji [Duke Ellington]
22dec38	Old King Dooji	M959-1	Brunswick 8306	C38-39:6 EsCo:1/20
15mar39	Old King Dooji		Azure CA-4	BritCon:14
26jul39	Old King Dooji		Palm Club 25	Boston:4
30jun45	Old King Dooji		Dets 12	Dets7:1/16
8sep45	Old King Dooji		Dets 22	Dets12:1/11c
	Old Man Blues [Duke Ellington-Irving Mills]
early aug30	Old Man Blues [from film Check And Double Check]		RKO	M11:1e CDCvhs DEIHdvd:7b
20aug30	Old Man Blues	BVE61012-1	Up-to-Date 2008	M11:4 AT4:25 RCA:4/12
20aug30	Old Man Blues	BVE61012-2	Bluebird B-6450	M11:5 AT2:17 RCA:4/13
20aug30	Old Man Blues	BVE61012-3	Up-to-Date 2008	M11:6 RCA:4/14
26aug30	Old Man Blues	BVE61012-4	Jazz Archives 21	M11:10 RCA:4/18
26aug30	Old Man Blues	BVE61012-6	Victor 23022	M11:11 C30v2:4 C30v2:6 RCA:4/19 100:4
30oct30	Old Man Blues	W404521-B	Okeh 8869	M12:4 C30v2:20
	Old Plantation [John Redmond-Lee David]
22apr37	Old Plantation [Ivie Anderson, vocal]	M418-1	Variety 591	C37:15
22apr37	Old Plantation [Ivie Anderson, vocal]	M418-2	Raretone RTE-23002	AT5:19
	On A Turquoise Cloud [Duke Ellington-Lawrence Brown]
22dec47	On A Turquoise Cloud [Kay Davis, vocal]	CO38592-1	Columbia 38234	C47-48:6 CoCo:2/15 EsCo:2/8 Vocalists:10
27dec47	On A Turquoise Cloud [Kay Davis, vocal]		Prestige P-24075	CH4712:1/8
22nov48	On A Turquoise Cloud [Kay Davis, vocal]		AFRS ONS-1830	Dooji4:9
16feb49	On A Turquoise Cloud [from film Symphony In Swing] [Kay Davis, vocal]			DEHOFvhs
	On The Air [Duke Ellington]
7nov40	On The Air			Fargo:1/17
	On The Alamo [Isham Jones/Gus Kahn]
28apr44	On The Alamo		White Label RM-343/344 Caracol CAR-435	***
2jun45	On The Alamo		Dets 8	Dets5:1/15
1sep45	On The Alamo		Dets 21	Dets11:2/2
17jul46	On The Alamo		Capitol Transcriptions	CapTrans:2/10
	On The Fringe Of The Jungle see Eggo
	ON THE ROAD WITH DUKE ELLINGTON [film]
apr-jul67	ON THE ROAD WITH DUKE ELLINGTON [film]			OTRdvd
	On The Sands Of Time [Peter Tchaikovsky]
11sep43	On The Sands Of Time		Temple M-554	***
	On The Sunny Side Of The Street [Jimmy McHugh/Dorothy Fields]
24apr38	On The Sunny Side Of The Street [Ivie Anderson, vocal]		Jazz Archives 13	CC2:8 CCBF:2/11
21dec38	On The Sunny Side Of The Street			Dooji1:11
16jun45	On The Sunny Side Of The Street		Dets 10	Dets6:1/7
3aug45	On The Sunny Side Of The Street			RadioYrs:16
4aug45	On The Sunny Side Of The Street [medley]		Dets 17	Dets9:2/16d
10may47	On The Sunny Side Of The Street	JB-485	V-Disc 795	C46-47:15 VDisc:3/14
22dec49	On The Sunny Side Of The Street [Lu Elliott, vocal]	CO42553	Up-to-Date2003	AT10:18
22dec49	On The Sunny Side Of The Street [Lu Elliott, vocal]	CO42553	Up-to-Date2003	AT10:19
22dec49	On The Sunny Side Of The Street [Lu Elliott, vocal]	CO42553-1	Columbia 38702	C49-50:8 CoCo:3/9
1jun57	On The Sunny Side Of The Street			AS2:15
9aug59	On The Sunny Side Of The Street		Roulette 828637-2	BN:2/12
24sep60	On The Sunny Side Of The Street [Jimmy Rushing, vocal]		Status	Monterey:2/6
23feb63	On The Sunny Side Of The Street		Atlantic SD2-304	GPC:1/3
1jul67	On The Sunny Side Of The Street [Ella Fitzgerald, vocal]		Pablo	GJC:3/10
	Once In A Blue Mood [Duke Ellington]
19may55	Once In A Blue Mood	14103-10	Up-to-Date 2009	CCR:5/15
	Once Upon A Dream [Duke Ellington-Billy Strayhorn/Thornton Hee-William Coltrell]
20nov47	Once Upon A Dream	CO38399	Up-to-Date 2003	AT10:8
20nov47	Once Upon A Dream	CO38399-1	For Discriminate Collectors 1022	C47-48:3 CoCo:2/12
	Once Upon A Time [Charles Strouse/Lee Adams]
2jan62	Once Upon A Time	CO68921	Columbia CL-1790	AAIJ:5
	One More Once [Duke Ellington]
2jun60	One More Once [Milt Grayson, vocal]	RHCO46672	CBS 26306	56/62v3:B6
6jul61	One More Once	CO67617-1	Columbia KG-32945	Basie:9
9jan62	One More Once [as The Good Years Of Jazz]		Goodyear 106657-L	MOJ6:9
	One More Time For The People [Duke Ellington]
23feb71	One More Time For The People [as There's A Place] [Tony Watkins, Nell Brookshire, vocal]		Storyville STCD-8323	TBS:10
7nov71	One More Time For The People [Tony Watkins, Nell Brookshire, vocal]			TIVOLIdvd:2/14
	One Note Samba [Antonio Carlos Jobim/Newton Mendonca]
8feb66	One Note Samba [as So Danco Samba] [Ella Fitzgerald, vocal]		Pablo 2308-242	Stockholm:6
3sep69	One Note Samba	-4		L&R:3/17
3sep69	One Note Samba	-5	Reader's Digest RDA-112	L&R:3/8
	One O'Clock Jump [Count Basie-Eddie Durham]
30jun45	One O'Clock Jump		Dets 12	Dets7:1/8
28jul45	One O'Clock Jump		Dets 16	Dets9:1/18
1sep45	One O'Clock Jump		Dets 21	Dets11:2/14
16jul46	One O'Clock Jump		Capitol Transcriptions	CapTrans:2/4
feb49	One O'Clock Jump [incomplete]		AFRS JJ-46	Empire:11
2jan54	One O'Clock Jump	12254-3	Capitol T-521	CCR:3/18
4mar58	One O'Clock Jump			PC:2/13
29nov62	One O'Clock Jump	3226	Reprise R-6168	RSR:1/6 RBBE:20
	The One That Got Away [Leonard Feather]
10jan46	The One That Got Away		Victor 40-4002	RCA:17/2
	One Two Button Your Shoes [Arthur Johnston-Johnny Burke]
18mar37	One Two Button Your Shoes [Ivie Anderson, vocal]		Collector's Classic 16	Dooji1:4
	The Opener [Cootie Williams]
20feb64	The Opener		Music Masters 65106-2	London:6
9mar64	The Opener		Pablo 2308-245	Harlem:1
29mar64	The Opener		Jazz Unlimited 322	CH6403:1/8
30jan65	The Opener		RTE 710434	Eur1:1/4
4mar65	The Opener	3394-1	Reprise R-6185	RSR:5/20
3jul66	The Opener [as Open House]		IGDJ GJ-12	SRO:7
27jul66	The Opener		Verve	Cote:2/5
28jul66	The Opener		Verve	Cote:4/4
	Opening Titles [Duke Ellington]
6nov68	Opening Titles [The Degas Suite]		LMR CD-83004	PC:5/1.1
23nov68	Opening Titles [The Degas Suite]		LMR CD-83004	PC:5/1.1
	Orchids For Remembrance [Peter De Rose/Mitchell Parish]
29jul40	Orchids For Remembrance		Jazz Moderne DE-003 Azure CA-1
	Orson [Duke Ellington-Billy Strayhorn]
7apr53	Orson	11420-5	Capitol T-637	C52-53:17 CCR:1/10
	Ortseam [Louis Bellson]
3dec68	Ortseam		Saja 91233-2	PC:9/12
	Oscalypso [Oscar Pettiford-Lloyd Trotman]
13sep50	Oscalypso	4007-1	Mercer 1952	C49-50:15 GT:11
	(Otto Make That) Riff Staccato [Si Schwartz-Milt Orent]
21apr45	(Otto Make That) Riff Staccato		Dets 2	Dets2/1:4
1may45	(Otto Make That) Riff Staccato [Ray Nance, vocal]	D5VB234-1	Victor 20-1697	C45:7 RCA:14/17 BB&B:1/15
4may45	(Otto Make That) Riff Staccato [Ray Nance, vocal]			Dets10:2/23
12may45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Dets 5	Dets3:2/3
30jun45	(Otto Make That) Riff Staccato		Dets 12	Dets7:1/13
31jul45	(Otto Make That) Riff Staccato [incomplete] [Ray Nance, vocal]		Circle CLP-108	WldTrans:4/21
31jul45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Circle CLP-108	WldTrans:4/22
31jul45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Circle CLP-108	WldTrans:4/23
4aug45	(Otto Make That) Riff Staccato [Bond promo]		Dets 17	Dets9:2/14
18aug45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Dets 19	Dets10:2/14
22sep45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Dets 24	Dets13:1/2
1oct45	(Otto Make That) Riff Staccato [Ray Nance, vocal]		Buddha 7446599629	DJ:8 Dets12:2/2
28oct45	(Otto Make That) Riff Staccato [Joya Sherrill, vocal]		AFRS ONS-786	Dets6:2/2
2jun45	(Otto Make That) Riff Staccatto [Ray Nance, vocal]		Dets 8	Dets5:1/18
	Our Children [Charles Strouse/Lee Adams]
10jan62	Our Children	CO69233	Columbia CL-1790	AAIJ:7
	Out Of Nowhere [Johnny Green/Eddie Heyman]
11jul43	Out Of Nowhere		Hurricane HC-6002	***
	Out Of This World [Harold Arlen/Johnny Mercer]
11aug45	Out Of This World [Kay Davis, vocal]		Dets 18	Dets10:1/9
	Out South [Duke Ellington]
15mar67	Out South [Combo Suite]		Fantasy F-9640	Intimacy:2
	Overture [Peter Tchaikovsky]
26may60	Overture [The Nutcracker Suite]	RHCO46653-5	Columbia CL-1541	3Suites:1
22jul60	Overture		Unique Jazz 27	HSD:3
24sep60	Overture		Status	Monterey:1/3
	Overture To A Jam Session [Billy Strayhorn]
11dec46	Overture To A Jam Session [Part 1]	5845-3	Musicraft 463	C46-47:9 HGLL:12
11dec46	Overture To A Jam Session [Part 2]	5846-3	Musicraft 463	C46-47:10 HGLL:12
7jan47	Overture To A Jam Session		Capitol Transcriptions	CapTrans:3/3
31aug47	Overture To A Jam Session			HB:2