During his headlining set for the Osheaga Music Festival in Montreal yesterday (August 1), Kendrick Lamar was joined by Mos Def, now generally known as Yasiin Bey, to get a performance from the Compton rapper’s latest single ‘Alright’. Scroll into watch fan-recorded footage.

According to Pigeons and Planes, the surprise collaboration occurred when Kendrick spotted Bey side-stage in the show. After some prodding, the MC and occasional actor joined Lamar on-stage for, first, ‘King Kunta’, then, ‘Alright’. Kendrick even told everyone else that Mos had inspired him to get started on rapping.

‘Alright’ appears on Lamar’s latest album, ‘To Pimp A Butterfly’. The song encourages listeners to face strong through crisis and was yesterday (July 26) heard being chanting within a protest against police harassment after having a Black Lives Matter conference being held at Cleveland State University turned contentious.

Protestors shouted the track’s “we gon’ be alright” chorus in solidarity after the 14-year-old was consumed in by police after allegedly being intoxicated on the bus next door from the convention. The Greater Cleveland Regional Transit Authority later confirmed that cops used pepper spray around the gathered crowd. There were no arrests. Click below to look at footage in the protest.

Also the other day, Kendrick performed his verse from A$AP Rocky’s ‘Fuckin’ Problems’ over his mentor Dr Dre’s ‘Xxplosive’ (see below). He’s set to guest on Dre’s forthcoming new album ‘Compton: A Soundtrack’. The producer’s first LP in 16 years is born out August 7.