The term "song-and-dance act" typically refers to a theatrical performance that includes singing, dancing, and sometimes comedy. However, there are several synonyms for this phrase that can be used interchangeably. One of the most common synonyms is "musical revue," which refers to a series of performances that showcase a variety of songs, dances, and other forms of entertainment. Another synonym is "vaudeville act," which typically includes comedy, music, and other types of performances. Other possible synonyms for "song-and-dance act" may include cabaret show, variety show, or performance revue. Regardless of the synonym used, these shows are always lively, entertaining, and full of energy.