U Don't Have to Call made famous by Usher
• 13 customizable audio tracks:
(Intro Count (Click + Key), Click, Electronic Drum Kit, Noise effects, Synth Bass, Electric Piano, Electric Piano, Synth Strings, Synth Keys, Guitar Synth, Backing Vocals, Lead Vocal, Lead Vocal)

Unwound made famous by George Strait
• 11 customizable audio tracks:
(Click, Drum Kit, Bass, Acoustic Guitar, Acoustic Guitar, Rhythm Electric Guitar, Pedal Steel Guitar, Piano, Fiddle, Backing Vocals, Lead Vocal)

Under Your Scars made famous by Godsmack
• 9 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Lead Electric Guitar, Piano, String Section, Backing Vocals, Lead Vocal)

Un Rinconcito en el Cielo made famous by Ramón Ayala
• 7 customizable audio tracks:
(Click, Drum Kit, Bass, Acoustic Guitar, Accordion, Backing Vocals, Lead Vocal)

Until It's Time for You to Go (live - in Texas) made famous by Elvis Presley
• 8 customizable audio tracks:
(Click, Drum Kit, Upright Bass, Electric Guitar, Piano, String Section, Backing Vocals, Lead Vocal)

Unruly Heart made famous by The Prom (musical)
• 15 customizable audio tracks:
(Intro Count (Click + Key), Click, Drum Kit, Bass, Acoustic Guitar, Arr. Acoustic Guitar, Electric Guitar, Electric Guitar, Piano, Electric Piano, String Section, Brass Instruments, Woodwinds, Backing Vocals, Lead Vocal)

Usted Abuso made famous by Celia Cruz & Willie Colón
• 7 customizable audio tracks:
(Click, Latin Percussion, Bass, Piano, Trombone, Backing Vocals, Lead Vocal)

Uptown Funk made famous by Pomplamoose
• 14 customizable audio tracks:
(Click, Drum Kit, Percussion, Noise effects, Bass, Electric Guitar, Piano, Organ, Synth Voice, Synth Lead, Synth Keys, Backing Vocals, Lead Vocal, Lead Vocal)

Usted made famous by Luis Miguel
• 12 customizable audio tracks:
(Intro Count (Click + Key), Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Digital Piano, String Section, Violin, Cello, Lead Vocal)

Use Ta Be My Girl made famous by The O'Jays
• 12 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Arr. Electric Guitar, Electric Piano, Brass section, String Section, Backing Vocals, Lead Vocal, Lead Vocal)