Wiz Khalifa has shared a new song called ‘Top Down’ – listen to it below.Taken from his upcoming mixtape ‘Big Pimpin’, Wiz teams up with New York producer Harry Fraud – known for his work with French Montana and Curren$y – for the roll-your-windows-down, laid back track.It follows a string of records the Taylor Gang rapper has put out as of late, including ‘Flight to China’, taken from the recently released ‘Road To Fast 9’ mixtape; ’90 IROC-Z’, where he teamed up with Curren$y; and ‘Gah Damn