Prince thrilled fans at the online launch party for his new albums by hitting the stage with Kendrick Lamar.

The pop superstar introduced Lamar for a rendition of rare track What's My Name as part of his Yahoo! Livestream Special to mark the release of Art Official Age and PlectrumElectrum.

Art Official Age is Prince's 34th album, while Plectrum Electrum is the first release from his new band, 3rd Eye Girl.

The live link-up preceded a question-and-answer session on Prince's new Facebook page - but that proved to be less than successful because the Purple Rain singer only addressed one of 4,000 messages from fans.