Beatles royalties recipient Sean Lennon is singing the blues today after his bandmate's computer was stolen from a van parked on Franklin and Hayes. John and Yoko's son's band, called The Ghost of a Saber Tooth Tiger, played at Great American Music Hall Tuesday night. Mission Mission has the scoop. Here's what Lennon's Instagram had to say:

Our percussionist Connor Grant’s laptop was stolen today in San Francisco! Our van window was smashed this morning as he was getting coffee near Franklin and Hayes. BIG REWARD if computer is returned unharmed! NO QUESTIONS ASKED! If anyone knows anything pleeeeease contact us at [email protected]

This provides us with yet another great reminder not to leave your laptop inside a parked vehicle. Anyway, good luck to Grant getting his gear back.

[Mission Mission]