Ocean Man made famous by Ween
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Old School made famous by Creed Fisher
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Over the Rainbow made famous by Josh Groban
• 1 music track in instrumental version
• 1 music track with vocals (cover)

Omerta made famous by Lamb of God
• 1 music track in instrumental version
• 1 music track with vocals (cover)

Only Happy When It Rains made famous by Garbage
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Oceans (Where Feet May Fail) made famous by Hillsong United
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

On a Bicycle Built for Two made famous by Nat King Cole
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Oklahoma City made famous by Zach Bryan
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Only Human made famous by Jeffrey Osborne
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Only the Lonely (Know the Way I Feel) made famous by Royal Philharmonic Orchestra & Roy Orbison
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)