The song is Ms Rightfernow by American rapper and singer/songwriter Wiz Khalifa.
Khalifa was born Cameron Jibril Thomaz on 8th September 1987 in Minot, North Dakota. His stage name comes from Khalifa which is an Arabic word meaning 'successor', and 'Wisdom' which he shortened to Wiz.
Khalifa married model Amber Rose on 8th July 2013 but in September 2014 she filed for divorce stating the reason as 'irreconcilable differences'. The couple have one son, Sebastian Taylor Thomaz born 21st February 2013.
Khalifa is open about his use of cannabis, and has told many interviewers that he spends $10,000 a month on cannabis, which he smokes daily.
However in early 2014 Khalifa no longer had to pay for cannabis as he is sponsored by "The Cookie Factory", a medical marijuana dispenser which sells his "Khalifa Kush" (KK) strain.