MONDAYS: The Fold at the Silverlake Lounge hosts monthly residencies, $3 beer (April: Depression Party). Same residency-type deal at The Echo (April: Viva K). Indie 103.1 FM presents Check . . . One Two at The Viper Room: tonsa local bands and a drink ticket for $8 (which supposedly equals a net loss of $1). TUESDAYS: Lovedrug brings Brit-rock-styled DJs and monthly residencies to The Derby, $2 beer (April: Mojo Filters). Ruby Tuesday at the Key Club (co-sponsored by Indie 103.1): Indie rock all ages night (no drink minimum) featuring live bands. WEDNESDAYS: Star Shoes presents Radio: DJs and (sometimes) bands. Moscow at Boardner’s features electro/indie “hipster shit” DJs and bands. Free till 10:30. THURSDAYS: Kibitz Room: month and half-month residencies (April: The King Cheetah, et al.).