It's always freaking cool when bands get together and jam and have fun. Slayer, Testament, and Carcass are out on tour together right now, and just hit San Francisco. Before the show, Gary Holt, Tom Araya, Paul Bostaph, and Alex Skolnick jumped on stage to jam out some Lynyrd Skynyrd during soundcheck!

Luckily, Paul had his GoPro set up for the show, and the kick ass jam of "Freebird" was caught on film, from the moment Gary started noodling on his guitar, to Tom and Paul joining in, and then Alex busting out the slide and coming on stage.

It's really cool to actually hear Tom's bass, Tom singing, and to see everyone else in the building stop whatever they were doing to come to the front of the stage and watch these fantastic musicians kick some serious ass on an old classic. The cheers and applause when they finish are all that need be said.

This was a bad ass moment, caught on tape.

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