Over the Rainbow (Alone in IZ World) made famous by Israel Kamakawiwo'ole
• 1 music track in 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)

One Margarita made famous by Luke Bryan
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Ocean Eyes made famous by Billie Eilish
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Outside of Love made famous by Becky Hill
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Oh Lonesome Me made famous by The Kentucky Headhunters
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Old Time Rock 'n Roll made famous by Michael Bolton
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

One More Time made famous by Blink-182
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Oh Happy Day made famous by Sister Act
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)

Only You (And You Alone) made famous by The Platters
• 2 music tracks in MP3 instrumental version
• 1 music track with vocals (cover)