...These grass-roots music events... have come up against the demands of US copyright law, as enforced by a handful of companies who act as collection agents for songwriters and composers. The law states that no performer in a public venue can present someone else's copyrighted music without their permission and, usually, without compensating them. A number of agencies, chief among them... BMI and... ASCAP, charge music venues an annual copyright "license fee" ranging from $300 to nearly $10,000 for the privilege of presenting someone else's music. Much of the music at those Ragged Edge open mics was written by the...