Umbrella made famous by All Time Low
• 9 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Electric Guitar, Backing Vocals, Lead Vocal, Lead Vocal)

Unchained Melody made famous by Royal Philharmonic Orchestra & Roy Orbison
• 14 customizable audio tracks:
(Click, Drum Kit, Timpani, Bass, Piano, String Section, Double Bass, Harp, Brass Instruments, French Horn, Oboe, Flute, Backing Vocals, Lead Vocal)

Unchained Melody (with the Royal Philharmonic Orchestra) made famous by Roy Orbison
• 14 customizable audio tracks:
(Click, Drum Kit, Timpani, Bass, Piano, String Section, Double Bass, Harp, Brass Instruments, French Horn, Oboe, Flute, Backing Vocals, Lead Vocal)

Un beso y una flor made famous by Nino Bravo
• 11 customizable audio tracks:
(Click, Drum Kit, Bass, Acoustic Guitar, Electric Guitar, Piano, Harpsichord, Brass section, String Section, Backing Vocals, Lead Vocal)

Un montón de estrellas made famous by Polo Montañez
• 8 customizable audio tracks:
(Click, Percussion, Upright Bass, Rhythm Acoustic Guitar, Rhythm Acoustic Guitar, Rhythm Electric Guitar, Backing Vocals, Lead Vocal)

Unskinny Bop made famous by Poison
• 11 customizable audio tracks:
(Click, Drum Kit, Bass, Distorted Electric Guitar, Arr. Electric Guitar, Arr. Electric Guitar, Lead Electric Guitar, Organ, Synth Pad, Backing Vocals, Lead Vocal)

Until I Found You made famous by Em Beihold & Stephen Sanchez
• 9 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Piano, Backing Vocals, Lead Vocal, Lead Vocal)

Until I Found You (Em Beihold version) made famous by Stephen Sanchez
• 9 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Piano, Backing Vocals, Lead Vocal, Lead Vocal)

Under The Boardwalk made famous by John Mellencamp
• 14 customizable audio tracks:
(Click, Drum Kit, Tambourine, Shaker, Bass, Rhythm Acoustic Guitar, Lead Acoustic Guitar, Banjo, Mandolin, Vibes, Fiddle, Backing Vocals, Female Backing Vocals, Lead Vocal)

Unbelievable made famous by EMF
• 11 customizable audio tracks:
(Click, Drum Kit, Percussion, Electric Bass, Electric Guitar, Distorted Electric Guitar, Lead Electric Guitar, Piano, Arpeggiator, Backing Vocals, Lead Vocal)