Ol' 55 made famous by Eagles
• 7 customizable audio tracks:
(Click, Drum Kit, Bass, Pedal Steel Guitar, Piano, Backing Vocals, Lead Vocal)

O-o-h Child made famous by The Five Stairsteps
• 11 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Piano, Organ, Synth Pad, Brass section, Backing Vocals, Female Backing Vocals, Male Lead Vocal)

On the Street Where You Live made famous by My Fair Lady (musical) (John Michael King)
• 13 customizable audio tracks:
(Click, Drum Kit, Timpani, Upright Bass, String Section, Harp, Wind Instruments, Tuba, French Horn, Oboe, Bassoon, Flute, Lead Vocal)

Ohio made famous by Crosby, Stills, Nash and Young & Neil Young
• 9 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Lead Electric Guitar, Backing Vocals, Lead Vocal, Lead Vocal)

Ohio made famous by Neil Young (Crosby, Stills, Nash and Young)
• 9 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Lead Electric Guitar, Backing Vocals, Lead Vocal, Lead Vocal)

One Day at a Time made famous by Lena Martell
• 13 customizable audio tracks:
(Intro Count (Click + Key), Click, Drum Kit, Bass, Acoustic Guitar, Acoustic Guitar, Electric Guitar, Pedal Steel Guitar, Piano, Vibes, String Section, Backing Vocals, Lead Vocal)

Oh What a Beautiful Morning made famous by Oklahoma! (musical)
• 12 customizable audio tracks:
(Click, Acoustic Guitar, Glockenspiel, String Section, Double Bass, Harp, Brass Instruments, French Horn, Oboe, Clarinet, Flute, Lead Vocal)

Ocean Drive made famous by Duke Dumont
• 11 customizable audio tracks:
(Click, Electronic Drum Kit, Electronic Percussion, Synth Bass, Electric Guitar, Electric Guitar, Electric Guitar, Synthesizer, Synth Pad, Backing Vocals, Lead Vocal)

One of Us made famous by Joan Osborne
• 12 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Electric Guitar, Distorted Electric Guitar, Lead Electric Guitar, Electric Piano, Synth Voice, Backing Vocals, Lead Vocal)

On The Dark Side made famous by Eddie and the Cruisers (John Cafferty & The Beaver Brown Band)
• 10 customizable audio tracks:
(Click, Drum Kit, Tambourine, Hand Clap, Bass, Electric Guitar, Electric Guitar, Piano, Tenor Saxophone, Lead Vocal)