Final answer:
A musical that is based around an idea rather than a story is called a concept musical. 'Company' by Stephen Sondheim is a prominent example, which introduced this form by using songs as commentary on the characters' lives, rather than following a traditional linear storyline.
Step-by-step explanation:
Defining a Concept Musical
When a musical is built around a thematic concept rather than a traditional narrative, it is referred to as a concept musical. This type of musical theatre focuses more on presenting ideas and themes through songs and vignettes rather than following a linear plot. The inception of the concept musical heavily influenced the trajectory of modern musical theatre, encouraging audiences and creators alike to embrace unconventional storytelling that prioritizes message and artistic expression over plot.
An example of a concept musical is the renowned production of 'Company' by George Furth and Stephen Sondheim. In contrast to traditional musicals, 'Company' featured characters who would perform songs as a commentary on the action, rather than directly forwarding a linear plot. This innovative structure challenged the norms of musical theatre and made audiences consider the implications of the characters' lives and relationships.