Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH₃. It is a colourless gas with a characteristic pungent smell. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers. Ammonia, either directly or indirectly, is also a building-block for the synthesis of many pharmaceuticals and is used in many commercial cleaning products. Although in wide use, ammonia is both caustic and hazardous. In 2006, worldwide production was estimated at 146.5 million tonnes.

Ammonia, as used commercially, is often called anhydrous ammonia. This term emphasizes the absence of water in the material. Because NH₃ boils at −33.34 °C (−28.012 °F) at a pressure of 1 atmosphere, the liquid must be stored under high pressure or at low temperature. “Household ammonia” or “ammonium hydroxide” is a solution of NH₃ in water. The concentration of such solutions is measured in units of the Baumé scale (density), with 26 degrees baumé (about 30% w/w ammonia at 15.5 °C) being the typical high-concentration commercial product. Household ammonia ranges in concentration from 5 to 10 weight percent ammonia.

Krysta Rodriguez (born July 23, 1984) is an American actress and singer most famous for her origination of Wednesday Addams in the Broadway musical The Addams Family

Krysta grew up in Orange County, California. She began taking dance lessons at the age of 13, after being involved with cheerleading in middle school. After traveling to New York and seeing eight Broadway shows, she realized performers had to sing and act as well as dance, so once she returned home Krysta began taking singing and acting lessons. She was a cast member of the Christian television show Colby's Clubhouse from 1995-2000. In High School she attended the Orange County High School of the Arts where she played many lead roles, including Marian in The Music Man.

Rodriguez first appeared on Broadway in the short-lived musical, Good Vibrations. She was later featured in the Broadway revival of A Chorus Line in 2007 as a replacement in the role of Bebe. She has played numerous chorus and understudy parts in the Broadway productions of Spring Awakening, In the Heights, and regional productions of The Boy Friend. In the 2010 film The Virginity Hit, she appears as "Krysta".

Heidi Blickenstaff is an actress based in New York City best known for playing a version of herself in the musical [title of show] during its Off-Broadway and Broadway runs.

Blickenstaff is a Broadway performer who gained widespread notice for her work in [title of show] after some years of working in understudy, supporting and ensemble roles.

The musical documents its own creation by two Broadway fans, who want to enter the New York Musical Theatre Festival and struggle to complete the show in three and a half weeks, and their two actress friends. The actors are also the writers and characters of the musical.

Blickenstaff has said her character in [title of show], a struggling actor also named "Heidi," is a "concentrated version" of her actual personality.

She also has credited her experience in [title of show] with easing her chronic stage fright, a form of self-doubt immortalized in one of the show's songs, "Die Vampire Die."

"I also have a stage fright vampire," she told TheaterMania.com in 2006, during [title of show]'s extended off-Broadway run at the Vineyard Theatre. "Certainly, [title of show] has been great medicine, because we talk about that stuff."

Joseph Peter Philip Iconis (born September 22, 1981) is an American musical theatre writer. He is a graduate of the NYU Tisch School of the Arts Graduate Musical Theatre Writing Program. He is a recipient of the 2006 Jonathan Larson Award, the 2007 Ed Kleban Award, and a Backstage Bistro Award. His innovative rock musical style has brought forth several shows. He has collaborated with Robert Maddock and Reza Jacobs on “Plastic! The Musical”, and Robert Maddock on “Triumphant Baby!”

Joe is also a concert performer, performing with his musical theater family or as part of the Joe Iconis Rock and Roll Jamboree at The Laurie Beechman Theater and Joe’s Pub. As part of his “Mule Revolution Tour 2008,” Joe had several popular musical theater faces guest as part of his concerts including Anthony Rapp, Daphne Rubin-Vega (Original cast of Rent) and John Gallagher, Jr. (original cast of Spring Awakening). Joe is closely associated with a group of actors referred to as “The Family.” Notable family members include Jason “SweetTooth” Williams, Lance Rubin, Katrina Rose Dideriksen (Hairspray), Krysta Rodriguez (Spring Awakening, In the Heights), Eric William Morris, Lorinda Lisitza, Badia Farha, Lauren Marcus, Matt Hinkley, Nick Blaemire, Jason Tam, Sarah Glendening, Jared Weiss, Jeremy Morse, Liz Lark Brown, MK Lawson, and musical theater icon Annie Golden (Assassins, Hair, Xanadu).

Alan Parsons (born 20 December 1948) is a British audio engineer, musician, and record producer. He was involved with the production of several significant albums, including The Beatles' Abbey Road and Let It Be, as well as Pink Floyd's The Dark Side of the Moon for which Pink Floyd credit him as an important contributor. Parsons' own group, The Alan Parsons Project, as well as his subsequent solo recordings, have also been successful commercially.

In October 1967, at age 18, Parsons went to work as an assistant engineer at Abbey Road Studios, where he earned his first credit on the LP Abbey Road. He became a regular there, engineering such projects as Paul McCartney's Wild Life and Red Rose Speedway, five albums by The Hollies, and Pink Floyd’s The Dark Side of the Moon, for which he received his first Grammy Award nomination. He was known for doing more than what would normally be considered the scope of a recording engineer’s duties.^{[citation needed]}He considered himself to be a recording director, likening his contribution to recordings to what Stanley Kubrick contributed to film.^{[citation needed]} This is apparent in his work with Al Stewart's "Year of the Cat", where Parsons added the saxophone part and transformed the original folk concept into the jazz-influenced ballad that put Al Stewart onto the charts.^{[citation needed]} It is also heard in Parsons' influence on the Hollies' "He Ain't Heavy, He's My Brother" and "The Air That I Breathe", sharp departures from their popular 1960s hits "Stay", "Just One Look", "Stop! Stop! Stop!" or "Bus Stop".^{[citation needed]} Parsons was also known to have swapped shifts during the engineering of The Dark Side of the Moon so he could work entirely on the project.^{[citation needed]}