The B-side to "Tambourine" is "Dancefloor" featuring Mashonda. The song features uncredited vocals by the song's producer Swizz Beatz (he is not credited as a featured performer).
The companion piece to "Tambourine" is "Dancefloor," which features Mashonda's vocals. Additionally, the song includes contributions from Swizz Beatz, although he is not acknowledged as a guest performer.