Photos: Gary Chancer SAN FRANCISCO — Thousands showed up to Potrero del Sol Park Saturday for the seventh annual Phono Del Sol music fest, a one-day concert with local and up-and-coming acts ranging from indie rock, hip-hop, and R&B to grunge and punk rock. Festivalgoers packed the main stage for SoCal…

Photos: Alessio Neri SAN FRANCISCO — London is currently on the cutting edge of electronic music. Whether it’s hip-hop with a dash of grime, satires of mainstream commercial electronic with bombastic production, or alternative R&B combined with the improvisation and looseness of jazz and minimalist electronic production. Jamie Isaac‘s music…