sondheimian 

Pertaining to the style of Broadway composer and lyricist Stephen Sondheim. It can be used to refer to his lyrical style (his rhymes!), his music or his trademark wit.

Jonathan Larson's song 'Sunday' from Tick, Tick... Boom! is distinctly Sondheimian.

sondheimian by FSinc. May 20, 2008

Sondheimgasm 

A large rush of pressure protruding through your body when you listen to music by Stephen Sondheim. Usually occurs during Sweeney Todd.

Wow, listening to "Sunday in the Park With George" just gave me a HUGE Sondheimgasm.

Sondheimgasm by meelah2011maryville January 11, 2009

Sondheimmaniac 

someone who fanatically loves everything Stephen Sondheim, the great Broadway musical genius, writes.

Richard knows everything about Stephen Sondheim musicals, and can and will discuss his works at a drop of the hat, he is such a 'Sondheimmaniac'!

Sondheimmaniac by broadwaybabywannabee February 23, 2012