Star was meant to appear on 'To Pimp A Butterfly' track 'Complexion (A Zulu Love)'
The Compton rapper is up for 11 nominations
“You gotta go with Kendrick. I’m just saying," Obama says
Lamar honoured by mayor Aja Brown
Obama recently named one of Lamar's songs as his favourite of 2015
The rapper has also appeared in a trailer for ABC sitcom 'Black-Ish'
Rapper is up for 11 Grammy nominations
Rappers make light of internet speculation
President named 'How Much a Dollar Cost?' the best song of 2015
His First Lady also reveals her top hit of the year