What type of musicians or musical ensembles would need a roadie?

Roadies are essential for touring musicians and bands, particularly those with elaborate stage setups, such as rock, pop, or electronic acts that require extensive sound and lighting equipment. They are also crucial for orchestras and large ensembles that necessitate the transport of numerous instruments and sound systems. Essentially, any musical act that performs live and relies on technical equipment would benefit from the support of a roadie to ensure smooth operations during performances.