Family Affair Music 510 S Myrtle Ave, Monrovia, CA91016 Step into Family Affair Music and you will step into the past. This treasure of a shop is filled with LPs, 45s, musical…More instruments, memorabilia and more. Opened in 1972, Family Affair Music is a music lover's oasis. The family-owned store is a favorite spot on historic Myrtle Avenue in Old Town Monrovia. When looking for that gift for the person who has everything, check into Family Affair Music and discover a true museum of oldies but goodies!