To Do: Decemberists, Brain Tumors, Mama Cass

· A Decidedly Above-Average Music Round-up: Royksopp at Avalon; Son Volt and Earlimart at the El Rey; the Decemberists play the first of two nights at the Henry Fonda.
· Laughter Vs. Brain Tumors: The Friars Club hosts a night of stand-up comedy to raise money for cancer research at The Brain Tumor Center at Duke University.
· Author Eddi Fiegel signs Dream a Little Dream: The Life of Cass Elliott at Book Soup. Actually, the event's at Jaxx, next door to Book Soup, where there will be booze, music, and a definitive explanation that Mama Cass did not, in fact, tragically choke to death on a sandwich "of any sort."