Not a lot of music is coming out of Viacom these days — but there could be if newly designated acting president and Chief Executive Bob Bakish plugs in his world-class guitar collection, The Post has learned.

Bakish, who cut his teeth at Viacom’s old MTV Networks International, started acquiring autographed guitars years ago, starting with a Jack Bruce bass.

He has since added “axes” from all the legends — except Jeff Beck, a friend says.

The prez-CEO appointee isn’t giving interviews as he awaits his official Nov. 15 start date. But a Viacom spokeswoman assured On the Money that once Bakish is press-available again, “he’d love to talk guitars.”