Beastie Boys fans could hear a lot more raps from the late Adam Yauch, if the trio's remaining members ever decided to open their vaults.

Mike Diamond told Rolling Stone last month that they'd done recordings with Yauch in the fall of 2011, and now their longtime collaborator Mario Caldato Junior says he knows there's lot of old songs that could come out some day.

Caldato, who worked with the Beasties for a decade, tells NME, "There's a handful of extra stuff from each record apart from [1989's] Paul's Boutique. I actually went through it all recently and checked out a few things that weren't used for [1998's] Hello Nasty, and there's definitely two or three tracks that didn't get utilized that could be utilized."

Caldato is named checked in the Beasties' hit "Intergalactic" with the line "Mario C likes to keep it clean."