Billy Failing concert: 8 p.m., The Fox Theatre, 1135 13th St., Boulder. Billy Failing is a Colorado-based banjo player, ...

Gutenberg, the Musical: Two-person spoof about a pair of aspiring writers with ambitions for Broadway; on stage through May 4 ...

Paula Gayatri album release: 6 p.m.,Trident Booksellers & Cafe, 940 Pearl St., Boulder; tridentcafe.com. Tinsley Ellis at Velvet Elk: 8 p.m., The Velvet Elk Lounge ...

$24.02, eventbrite.com. River Spell and Young and Dead: 8 p.m. Friday, The Fox Theatre, 1135 13th St., Boulder. Check out two Colorado-based bands at the Fox: River Spell delivers heartfelt ...