I believe it's from the VH1 Unplugged series (haven't downloaded and watched it, but that's what it sounds like). Brian May was invited to bring his band over for a session in 1998, which was later broadcast on VH1.
The VH1 Unplugged series is most remembered for being where the original lineup of KISS reunited for the first time since Peter Criss left/was kicked out of the band.
i have downoaded all 5 parts, however when trying to extract each clip on winrar a warning sign keeps popping up saying something is corrupt and it cannot extract...