Matt Sorum -- Former GNR Drummer Tight-Lipped On Coachella

So who's playing drums when Guns N' Roses reunites at Coachella? Matt Sorum seems a likely candidate, which is why our LAX encounter was so important.

Slash, Duff McKagan, and even Axl Rose have signed on, but no word on the skins.

Check out the video ... we can't figure out if Matt's in or out.

Matt played drums from 1990 - '97. Frank Ferrer assumed the role in '06, but with former members reuniting, Matt could be the likely choice.