The 17th Street Market features live music from noon to 2 p.m., every Saturday. March 27: Al Perry. A drumming circle takes place from 10 to 11 a.m., every Thursday. Beginner guitar classes take place from 4 to 5 p.m., Thursdays, for ages 6 to 12; followed by classes for ages 12 and older from 5:15 to 6:15 p.m. Free. Call 624-8821, ext. 147, for more information.