From Longman Dictionary of Contemporary Englishbuskbusk /bʌsk/ verb [intransitive] British EnglishAPM to play music in a public place in order to earn money —busker noun [countable]→ See Verb table
Examples from the Corpus
busk• He re-appears, gently strumming his 40-year-old acoustic guitar in the midst of the audience and proceeds to busk around the crowd! 