Even a decade ago, the term ‘gig’ was largely restricted to the world of music. Cambridge Dictionary still defines gig as a single performance by a musician or group of musicians – extending the scope to include musicians and bands playing modern or pop music and also ropes in comedians.

Source: https://timesofindia.indiatimes.com/blogs/voices/stronger-regulations-can-go-a-long-way-in-safeguarding-gig-workers/