Up Around the Bend made famous by Creedence Clearwater Revival
• 10 customizable audio tracks:
(Click, Drum Kit, Hand Clap, Bass, Acoustic Guitar, Acoustic Guitar, Rhythm Electric Guitar, Lead Electric Guitar, Backing Vocals, Lead Vocal)

Un poco de sangre made famous by Maldita Vecindad y los Hijos del Quinto Patio
• 12 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Electric Guitar, Lead Electric Guitar, Organ, Brass section, Trumpet, Tenor Saxophone, 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)

Unchained made famous by Van Halen
• 7 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Lead Electric Guitar, Backing Vocals, Lead Vocal)

Uninvited made famous by Alanis Morissette
• 15 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Rhythm Acoustic Guitar, Rhythm Acoustic Guitar (Arpeggio), Rhythm Electric Guitar (Arpeggio), Distorted Electric Guitar, Distorted Electric Guitar, Piano, Synth Pad, Organ, String Section, Backing Vocals, Lead Vocal)

Uninvited made famous by City of Angels (Alanis Morissette)
• 15 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Rhythm Acoustic Guitar, Rhythm Acoustic Guitar (Arpeggio), Rhythm Electric Guitar (Arpeggio), Distorted Electric Guitar, Distorted Electric Guitar, Piano, Synth Pad, Organ, String Section, 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)

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)

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)

Upside Down made famous by Paloma Faith
• 12 customizable audio tracks:
(Click, Electronic Drum Kit, Electric Bass, Synth Bass, Acoustic Guitar, Electric Guitar, Rhythm Electric Guitar, String Section, Woodwinds, Noise effects, Backing Vocals, Lead Vocal)