Stephen Sondheim’s Company is considered to be one of the first concept musicals, moving in a different direction from the book musicals of creative teams such as Rodgers and Hammerstein.
The construction of Company combines aspects of a concept musical with a psychological narrative. An investigation of the musical’s dramatic layers furthers a metadramatic understanding of Sondheim’s unique and innovative version of the concept musical—a version that refuses to subjugate character development and emotional accessibility for conceptual didacticism.
This according to “Concept meets narrative in Sondheim’s Company: Metadrama as a method of analysis” by Natalie Draper (Studies in musical theatre IV/2  pp. 171–83).
Today is Sondheim’s 90th birthday! Above, a photo from around the time Company was produced; below, the show’s climactic song, Being alive, from a 2011 concert production.