An offshoot of Built to Spill, Butterfly Train was headed up by frequent BtS bassist Brett Nelson (not to be confused with Brett Netson, another BtS cohort who led Boise, ID's Caustic Resin). Nelson had grown up in Twin Falls, ID, with future Built to Spill leader Doug Martsch, and first played with him in the punk band Farm Days, which was formed in the mid-'80s while the two were in high school. Martsch went on to play in the Treepeople before forming Built to Spill in 1993, conceiving of the group as a loose collective that would allow him to work with different musicians h...