What Uber did for transportation and Airbnb did for lodging, Sofar Sounds aims to do for concerts, according to Sam Toizer, a lead booker for Sofar San Francisco. He started volunteering with the organization in 2013 when he lived in Chicago. Eight months ago, he started booking shows for…

Photos: Brandon Jernigan and Che Holts Opposing forces with similar traits ruled the night Saturday at Great American Music Hall, where four synth-rock bands with San Francisco shared a single bill. Highlighted by the dark pop of Dangermaker and the happy-go-lucky dance pop of Panic Is Perfect, the lineup…