Robert JohnThe Head Cat, with Dragstrip Riot, Hard Money Saints, The Load Levelers. El Corazon, 109 Eastlake Ave. E., 381-3094. 9 p.m. $20. While he’s primarily known as leader of one of the loudest, punk-informed metal bands of all time, Motorhead frontman Lemmy Kilmister’s first love is actually rollicking, old-school rock-and-roll, a la Chuck Berry and Eddie Cochran. The Head Cat is essentially Kilmister’s rockabilly supergroup: a trio that includes Stray Cats’ drummer Slim Jim Phantom and multi-instrumentalist Danny B. Harvey (a veteran of the Austin music scene who’s played with everyone from Nancy Sinatra to the Lonesome Spurs). While the face-melting effects of a Motorhead show may draw bigger crowds, it’s hard to beat the joy of seeing Kilmister on a smaller stage belting out the songs that helped shape the icon that he is today. HANNAH LEVINKarl Blau, with The Soft Hills, James Apollo, Brain Fruit. Neumos, 925 E. Pike St., 709-9467. 7 p.m. $7. It’s hard to name a Seattle or Olympia-based artist who hasn’t worked with K Records stalwart Karl Blau in some capacity — whether as sound engineer, producer or musical co-conspirator. He plays with the Microphones’ Phil Elverum and Beat Happening’s Bret Lunsford in D+, has recorded with Laura Veirs and Calvin Johnson, plays bass in Earth…it’s harder to think of a band Blau hasn’t worked with in some way than to list those he has. Kimya Dawson and Jeffrey Lewis even wound up promoting Blau from sound engineer to band member of their long-dormant side project the Bundles during the recording of the band’s first album. And through all this, Blau has managed to release his own excellent solo records with remarkable consistency. SARA BRICKNER