Just You 'N' Me made famous by Chicago (band)
• 11 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Electric Guitar, Piano, Electric Piano, Brass section, Soprano Saxophone, Backing Vocals, Lead Vocal)

Juice made famous by Lizzo
• 15 customizable audio tracks:
(Click, Drum Kit, Percussion, Noise effects, Bass, Electric Guitar, Electric Guitar, Synth Lead, Synth Keys, Synth Keys, Synth Brass, Brass section, Backing Vocals, Lead Vocal, Lead Vocal)

Jessica (Single Version) made famous by The Allman Brothers Band
• 10 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Rhythm Acoustic Guitar, Acoustic Guitar, Lead Electric Guitar, Lead Electric Guitar, Piano, Organ)

Johnny B. Goode (live in Las Vegas) made famous by Elvis Presley
• 11 customizable audio tracks:
(Click, Drum Kit, Tambourine, Hand Clap, Bass, Electric Guitar, Electric Guitar, Piano, Brass section, Backing Vocals, Lead Vocal)

Jailbreak made famous by Thin Lizzy
• 10 customizable audio tracks:
(Click, Drum Kit, Bass, Rhythm Electric Guitar, Rhythm Electric Guitar, Lead Electric Guitar, Lead Electric Guitar, Sound effects, Backing Vocals, Lead Vocal)

Just the Way You Are (live - on NBC's Today) made famous by Bruno Mars
• 11 customizable audio tracks:
(Click, Drum Kit, Hand Clap, Bass, Electric Guitar, Piano, Trumpet, Trombone, Tenor Saxophone, Backing Vocals, Lead Vocal)

Joy of My Life made famous by Chris Stapleton
• 9 customizable audio tracks:
(Click, Drum Kit, Percussion, Bass, Acoustic Guitar, Acoustic Guitar, Electric Guitar, Lead Electric Guitar, Lead Vocal)

Judas made famous by Lady Gaga
• 15 customizable audio tracks:
(Click, Electronic Drum Kit, Electronic Snare Drum, Synth Bass, Synth Bass, Synthesizer, Synth Pad, Synth Strings, Synth Lead, Synth Keys, Arpeggiator, Orchestra Hit, Noise effects, Backing Vocals, Lead Vocal)

Joanna made famous by Kool and the Gang
• 12 customizable audio tracks:
(Click, Drum Kit, Bass, Rhythm Electric Guitar, Electric Guitar, Electric Guitar, Synthesizer, Synth Strings, Synth Keys, Brass section, Backing Vocals, Lead Vocal)

Jesus Is Love made famous by Lionel Richie (Commodores)
• 12 customizable audio tracks:
(Click, Drum Kit, Bass, Electric Guitar, Electric Guitar, Piano, Synthesizer, Synth Brass, String Section, Harp, Backing Vocals, Lead Vocal)