Must B 21

Must B 21 adalah album musik kedua dari penyanyi hip-hop asal Amerika Serikat, will.i.am, yang dirilis pada tanggal 23 September 2003.

Must B 21
Album studio karya will.i.am
Dirilis	23 September 2003
Direkam	2002-2003
Genre	Hip hop
Durasi	48:37
Label	Interscope Records/Columbia Records
Kronologi will.i.am
Lost Change (2001)Lost Change2001 Must B 21 (2003) Songs About Girls (2007)Songs About Girls2007

Daftar lagu

Tracklisting

No.	Judul	Durasi
1.	"Take It" (duet KRS-One)	2:49
2.	"Nah Mean" (duet Phife)	3:48
3.	"B Boyz" (duet MC Supernatural)	2:56
4.	"Here To Party" (duet Flii, Planet Asia & Kron Don)	3:12
5.	"Bomb Bomb" (Interlude)	0:23
6.	"Bomb Bomb" (duet MC Supernatural)	3:25
7.	"Swing By My Way" (duet John Legend)	3:49
8.	"It's OK" (duet Triple Seven & Dante Santiago)	3:39
9.	"Mash Out" (Interlude)	0:39
10.	"Mash Out" (duet MC Lyte & Fergie)	3:09
11.	"Ride Ride" (duet John Legend)	3:16
12.	"Sumthin' Special" (duet Niu, Dante Santiago & Taboo)	3:55
13.	"Sumthin' Special" (Interlude)	0:50
14.	"I'm Ready (Y'All Aint Ready For This)" (duet Tash & MC Supernatural)	3:40
15.	"We Got Chu" (duet Planet Asia & Flii)	3:52
16.	"Go!" (Interlude)	1:32
17.	"Go!"	3:54