1+1+1=3

Whose song is 1+1+1=3?

Artist Album
Prince
Days of Wild
From Alborg With Live CD1
Funk, Sweat, & Tears CD1
One More Nite Alone In Washington CD1
One Nite Alone : The Winnipeg & London Aftershows (disc 1)
One Nite Alone @ The Apollo (Disc 1 of 3)
One Nite Alone EP & Days of Wild (Montreal) & 1+1+1=3 (Live Edit
One Nite Alone in Berlin (Disc 1 of 3)
One Nite Alone in Chicago
One Nite Alone Live - Disc 1
One Nite Not So Alone - Disk 2
Rotterdam We Come 2 Jam disc 1
Rotterdam We Come 2 Jam (Bootleg) (CD1) - CDA
The Dallas and Atlanta Aftershows disc 3
The Rainbow Children
Prince & The NPG
Get Funky Tokio - November 15th 2002 (Disc 1)
One Nite Alone... In Berlin (Disc 2)
One Nite Alone... In Paris (Disc 2): The Show