-- An altercation at a Tenacious D concert in Las Vegas on Saturday reportedly resulted in a stabbed fan, a large pool of blood and one person rushed to the hospital, where he was expected to make a full recovery. Another man was arrested for the incident, which caused the D gig to be cut short. [Ultimate Classic Rock]

-- Indie duo Matt and Kim have mapped out a six-week North American trek in support of their forthcoming 'Lightning' album that will kick off Oct. 3 in Burlington, Vt., the day after the disc drops, and will keep them on the road through Nov. 17 in Montclair, N.J. [Pollstar]

-- Three members of the all-girl Russian punk band Pussy Riot are scheduled to go on trial today in Moscow on charges of hooliganism after performing  a "punk prayer" in protest President Vladimir Putin back in February. Red Hot Chili Peppers singer Anthony Kiedis is among the Western rock stars who have shown support for the group. [Death + Taxes]

-- What's the story behind the newly-revealed cover to Muse's forthcoming album, 'The 2nd Law'? It's a map of the human brain's neural pathways as mapped out by the the Human Connectome Project, of course. [Rolling Stone]

-- "It was written in the car while my family and I were driving to the zoo," Aaron Embry says of  'Moon of the Daylit Sky,' a new tune from his 'Tiny Prayers' that's currently available as a free download on Spinner. How many song origin stories start off better than that? [Spinner]

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