The fourth annual Berkeley World Music Weekend returns Saturday and Sunday from noon to 9 p.m. with a cornucopia of dozens of bands and musicians from around the world who call the Bay Area home. Everything is free, with musicians and dancers performing on the sidewalks and in the cafes, restaurants, and book and record stores along Telegraph Avenue between Bancroft and Dwight. Name a destination and it’s represented, from Cajun dance music to Zimbabwean dance troupes, French musette to Indonesian gamelan. On Saturday from 1 to 5 p.m., Congolese bandleader Samba Ngo headlines an upbeat lineup on the People’s Park Stage. See our music listings for more details. BerkeleyWorldMusic.org