The Dregs occupy a singular musical niche: Band members backgrounds are varied, but together, the group sings and plays twisted versions of songs, to the delight of audiences in Minnesota and elsewhere. The Dregs take the stage at the Metronome in Saint Paul, Saint Patrick’s Weekend, Saturday and Sunday March 16 and 17. When Tim and Molly of the Dregs got together with Phil Nusbaum, first they talked about the history of the Dregs.