Rock opera is a genre of music that combines the elements of rock music and opera, often featuring a storyline with a theme or concept album. Some synonyms for the term "rock opera" include "music drama," "rock musical," "concept album," and "rock spectacle." Other similar terms include "progressive rock," "symphonic rock," and "art rock." These genres are often associated with complex arrangements, virtuosic performances, and theatrical elements, similar to traditional operas. Some notable examples of rock opera include "The Who's Tommy," Andrew Lloyd Webber's "Jesus Christ Superstar," and Pink Floyd's "The Wall".