Go to Sakuragicho or Kannai for music-related performances!
The most popular places in the area for music-related street performances are Sakuragicho and Kannai in Yokohama. Right outside Sakuragicho station, there are many types of music performed, from ballads to acoustic to pop! It may be fun to stop by, listen and perhaps purchase their CD!
Kannai is famous for their jazz performances in front of Kannai Hall (about five minutes away from the Kannai-station exit). As a jazz-lover, I love stopping by Kannai after a delicious lunch in the vicinity.