Under The Boardwalk made famous by The Overtones
• 15 customizable audio tracks:
(Click, Drum Kit, Percussion, Noise effects, Upright Bass, Rhythm Acoustic Guitar, Lead Acoustic Guitar, Rhythm Electric Guitar, Arr. Electric Guitar, Organ, String Section, Flute, Backing Vocals, Lead Vocal, Lead Vocal)

U.S. Blues made famous by Grateful Dead
• 13 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Electric Guitar, Electric Guitar, Piano, Electric Piano, Synthesizer, Backing Vocals, Lead Vocal)

Un'Emozione Per Sempre made famous by Eros Ramazzotti
• 14 customizable audio tracks:
(Click, Drum Kit, Bass, Rhythm Acoustic Guitar, Lead Acoustic Guitar, Rhythm Electric Guitar, Rhythm Electric Guitar (Arpeggio), Arr. Electric Guitar, Mandolin, Piano, Organ, String Section, Backing Vocals, Lead Vocal)

Uptight (Everything's Alright) made famous by Stevie Wonder
• 10 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Piano, Brass section, Backing Vocals, Lead Vocal)

Uptown Funk made famous by Jamie Cullum
• 5 customizable audio tracks:
(Click, Drum Kit, Upright Bass, Piano, Lead Vocal)

Un puño de tierra made famous by Ramón Ayala
• 7 customizable audio tracks:
(Click, Drum Kit, Bass, Acoustic Guitar, Accordion, Backing Vocals, Lead Vocal)

Unchained Melody (live) made famous by Engelbert Humperdinck
• 13 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Piano, Organ, String Section, Violin, Viola, Cello, Lead Vocal)

Unbreakable made famous by UglyDolls (Janelle Monáe & Kelly Clarkson)
• 13 customizable audio tracks:
(Click, Drum Kit, Percussion, Synth Bass, Acoustic Guitar, Electric Guitar, Piano, Synth Pad, Arpeggiator, String Section, Backing Vocals, Lead Vocal, Lead Vocal)

Unbreakable made famous by Janelle Monáe & Kelly Clarkson
• 13 customizable audio tracks:
(Click, Drum Kit, Percussion, Synth Bass, Acoustic Guitar, Electric Guitar, Piano, Synth Pad, Arpeggiator, String Section, Backing Vocals, Lead Vocal, Lead Vocal)

Unbreakable made famous by Kelly Clarkson & Janelle Monáe
• 13 customizable audio tracks:
(Click, Drum Kit, Percussion, Synth Bass, Acoustic Guitar, Electric Guitar, Piano, Synth Pad, Arpeggiator, String Section, Backing Vocals, Lead Vocal, Lead Vocal)