The phrase 'one-man band' is often used to describe a person who can do several things at once or who handles many responsibilities. There are several synonyms for this phrase including a solo act, a solo performer, a lone wolf, a jack-of-all-trades, and a multitasker. Each of these phrases captures the essence of a person who can work independently and takes charge of many tasks. These phrases can be used interchangeably to describe someone who is self-sufficient and can carry out multiple roles without outside help. So, if you are a solo performer or multitasker, don't worry about being called a one-man band, as there are several other ways to describe your unique set of skills.