Last night, BBC Four aired the second installment of the new three-part ‘Punk Britannia’ documentary series. Thanks, once again, to YouTuber syden1, you can now watch Part 2, subtitled ‘Punk 1976-1978.’ The final part, ‘Post-Punk 1978-1981,’ debuts next Friday, June 15.

Last weekend’s Cure-headlined Primavera Sound 2012 festival in Barcelona also saw an appearance by ChameleonsVox — the band featuring frontman Mark Burgess and drummer John Lever of post-punk favorites The Chameleons — and we can now bring you a capture of the full webcast of the band’s 50-minute set.

Seattle radio station KEXP has been uploading video of some of its past in-studio sessions to YouTube, and here’s another: A Sept. 23, 2009, visit during which the brothers Kirkwood performed four tracks off their then-new album ‘Sewn Together,’ plus ‘one of those Nirvana songs,’ aka ‘Plateau.’

Danish indie-pop combo Efterklang premiered its forthcoming album ‘Piramida’ by performing it in full at the Sydney Opera House backed by a symphony orchestra and a new touring drummer: Budgie, of Siouxsie & The Banshees and The Creatures, who will join the band on a series of fall European dates.

Seattle’s KEXP has been uploading past in-studio sessions to YouTube of late, and the latest beneficiary of this is Dinosaur Jr. The trio stopped in on Dec. 17, 2011, to record live versions of a couple classics and its trademark cover of The Cure’s ‘Just Like Heaven,’ plus have a little chat with Henry Rollins.

Here’s video shot in the last week of Sonic Youth’s Thurston Moore covering the Rolling Stones’ ‘It’s Only Rock and Roll (But I Like It)’ in Rio and bandmate Lee Ranaldo doing his take on Talking Heads”Thank You For Sending Me An Angel,’ before segueing into his own song ‘Fire Island (Phases),’ in Barcelona.