War, what is it good for? How about a live performance from Ghost, Masta Killa and Killa Priest during last night’s telecast of Jimmy Fallon’s show? 12 Reasons To Die in stores April 16.

Last night, Janelle Monáe touched down with The Roots on the Late Night With Jimmy Fallon. Above, she pays tribute to the late Jimi Hendrix with her rendition of “Little Wing“.

Last night, Wale made his return to Late Night With Jimmy Fallon.

Last night JT ended his 5 night streak on Fallon’s show

JT kept his week long Late Night with Jimmy Fallon appearances popping last night by performing his upcoming album’s fourth track. The 20/20 Experience Tuesday.

JT kept his new album promo going on his third day on Late Night with Jimmy Fallon. Above, he performs track 8 The 20/20 Experience. Pretty groovey.

Justin continued his week visit on Fallon last night with a performance of his latest single “Mirrors” with the Roots. After the jump, he took it back with “Sexy Back” with the Ragtime Gals.

Justin’s The 20/20 Experience drops March 19, but you can stream the album in full on iTunes here. Last night, JT visted Jimmy Fallon and performed its opening track, “Pusher Love Girl”. After the jump, he spoke on his SNL performance, which included a subliminal shot towards Kanye.

With his all-girl band, Prince helped Late Night with Jimmy Fallon celebrate their 4 year anniversary by performing “Screwdriver” and “Bambi”. Looks like he owes Roots guitarist, Captain Kirk a new guitar. MiMi also partook in the festivities with a toast. She discussed American Idol and revealed her album, which will feature the likes of Hit-Boy, The-Dream, JD and more, will be due in May.

Along with a few members of Odd Future, Tyler returned to Late Night with Jimmy Fallon this evening to perform “TreeHome” and “Domo 23” with The Roots. Hey, it wasn’t that bad.