Oakland power trio High On Fire is the heir apparent to Motorhead. Matt Pike’s massive riffs are pummeling and often played at a breakneck speed (much in contrast to the axeman’s other band, the sludgy stoner doom kings Sleep). The rhythm section of bassist Jeff Matz and Dez Kenzel also sound like a the rumbling of a tank barreling down the listener.

Pike recently completed rehab and has emerged sober, focused and hell-bent on creating the most massive riffs that metal has ever known. High On Fire’s seventh studio album, Luminiferous, is out now and I highly recommend that you run out and grab a copy (or, you know, stay in and download it… legally, of course).

Stoner/doom metal monoliths Sleep have just premiered their first new track in 18 years. Titled “The Clarity”, the new track is to be released this coming Monday, July 21st as part of the Adult Swim Singles Series. You can hear it here, below.

The nearly 10-minute song finds Sleep pretty much where they left off in 1996 with their opus, the one hour and three-minute-long single song album Dopesmoker. The recording of that legendary piece left the band at war with their label London Records and only saw the light of day in unauthorized bootlegs until it was finally released via Tee Pee Records in 2003, 7 years after it was recorded. The turmoil lead the band to split, with guitarist Matt Pike forming and fronting the ultra heavy High On Fire, while vocalist/bassist Al Cisneros and drummer Chris Hakius became the experimental rock band Om.