Sleater-Kinney: Little Babies
Sleater-Kinney started as Carrie Brownstein's and Corin Tucker's side project as they were both in other bands at the time (Excuse 17 and Heavens to Betsy). Slowly Sleater-Kinney became their main focus but they didn't have a consistent drummer until they introduced Janet Weiss into the equation. The three Pacific-Northwest natives were a good fit and went on to make the rest of their catalog together.
They were one of the bigger names to come out of the Riot Grrl scene and one that was able to stay popular and current with the changing music scene. Their last album The Woods, was critically acclaimed and left people shocked when they went on hiatus on such a high note.
They made seven full-length albums in total before going on indefinite hiatus in 2006, but there's talks of reunions and side project albums in the meantime. Carrie has dabbled in other artist endeavors like acting and producing video, Janet has focused on her other band, Quasi, and Corin has focused her attentions on being a mother, though she's also been in the studio.