Ob-La-Di, Ob-La-Da made famous by The Beatles
• 12 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Acoustic Guitar, Acoustic Guitar, Electric Guitar, Piano, Harpsichord, Brass section, Backing Vocals, Lead Vocal)

Oye Mi Amor made famous by Maná
• 11 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Rhythm Electric Guitar, Electric Guitar, Lead Electric Guitar, Synthesizer, Flute, Backing Vocals, Lead Vocal)

One Headlight made famous by The Wallflowers
• 11 customizable audio tracks:
(Click, Drum Kit, Bass, Acoustic Guitar, Rhythm Electric Guitar, Electric Guitar, Distorted Electric Guitar, Lead Electric Guitar, Organ, Backing Vocals, Lead Vocal)

Open Arms made famous by Journey
• 8 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Piano, Synth Strings, Backing Vocals, Lead Vocal)

Oh! Darling made famous by The Beatles
• 8 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Piano, Backing Vocals, Lead Vocal)

Ordinary World made famous by Duran Duran
• 14 customizable audio tracks:
(Click, Drum Kit, Noise effects, Bass, Rhythm Acoustic Guitar, Electric Guitar, Rhythm Acoustic Guitar (Arpeggio), Lead Acoustic Guitar, Organ, Synthesizer, Synth Strings, Synth Voice, Backing Vocals, Lead Vocal)

Oops!... I Did It Again made famous by Britney Spears
• 15 customizable audio tracks:
(Click, Drum Kit, Percussion, Noise effects, Synth Bass, Electric Guitar, Piano, Organ, Synth Pad, Synth Lead, Synth Keys, Harp, Backing Vocals, Lead Vocal, Lead Vocal)

One Love (People Get Ready) made famous by Bob Marley
• 11 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Piano, Organ, Backing Vocals, Lead Vocal, Lead Vocal)

Only You (And You Alone) made famous by The Platters
• 8 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Piano, Tenor Saxophone, Backing Vocals, Lead Vocal)

Only Wanna Be with You made famous by Hootie & the Blowfish
• 12 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Acoustic Guitar, Rhythm Acoustic Guitar, Rhythm Electric Guitar, Rhythm Electric Guitar, Lead Electric Guitar, Lead Electric Guitar, Backing Vocals, Lead Vocal)