Victoria Beckham filmed Cruz performing in a band during a “spontaneous” London pub gig.
The musician, 18, was filmed playing the guitar while performing Beatles song Come Together.
Pub-goers where treated to the gig at the Lore Of The Land pub in Fitzrovia, on Thursday November 30.
The teenager’s proud mother, 49, shared a video of the show, adding: “Spontaneous performance last night at the pub! Kisses.”