Question: Which operetta does Lamplighters Music Theature feature that was composed by Leonard Bernstein?

Context articles: On the Town (film)
Pacific Music Festival
The Joy of Christmas
Lamplighters Music Theatre
Margaret Carson
Bernstein/Beethoven
Candide (operetta)
For New York
Leonard Bernstein Festival of the Creative Arts
Four Anniversaries for the Piano

On the Town is a 1949 Technicolor musical film with music by Leonard Bernstein and Roger Edens and book and lyrics by Betty Comden and Adolph Green.
 It is an adaptation of the Broadway stage musical of the same name produced in 1944 (which itself is an adaptation of the Jerome Robbins ballet entitled "Fancy Free" which was also produced in 1944), although many changes in script and score were made from the original stage version; for instance, most of Bernstein's music was dropped in favor of new songs by Edens, who disliked the majority of the Bernstein score for being too complex and too operatic.
 This caused Bernstein to boycott the film.
The Pacific Music Festival (パシフィック・ミュージック・フェスティバル) is an international classical music festival held annually in Sapporo, Japan.
 It was founded in 1990 by Leonard Bernstein, who had originally planned for it to be held in Beijing.
 The original artistic directors were Leonard Bernstein and Michael Tilson Thomas.
 Subsequent artistic directors have included Christoph Eschenbach and Fabio Luisi, and principal conductors have included Charles Dutoit, Bernard Haitink, Valery Gergiev, Nello Santi, Riccardo Muti, Fabio Luisi, and Jun Märkl.
 Principals and performers from major orchestras in Europe and America, as well as soloists, serve as faculty, providing 4 weeks of instruction to young musicians from around the world who are selected through auditions.
 During the festival, performances of the PMF Orchestra, in addition to those of various chamber ensembles made up of students and faculty, are frequent and well attended.
The Joy of Christmas features the Mormon Tabernacle Choir with the New York Philharmonic with Leonard Bernstein conducting.
 It is the only Christmas album ever recorded by Leonard Bernstein and the New York Philharmonic.
 Richard P. Condie directed the choir.
 Recorded in October 1963 and released by Columbia Masterworks, the 50 + minutes album, unusually long for its time for one LP, was released on compact disc on July 7, 1990 by Sony Masterworks.
 The album was reissued in 1997 with additional selections, including music from Tchaikovsky's ballet "The Nutcracker".
 
Lamplighters Music Theatre is a semi-professional musical theatre company based in San Francisco, California.
 Founded in 1952 by Orva Hoskinson and Ann Pool MacNab, the Lamplighters specialize in light opera, particularly the works of Gilbert and Sullivan, as well as such works as "The Merry Widow", "Die Fledermaus", "Of Thee I Sing", "My Fair Lady", "Candide", and "A Little Night Music".
Margaret Carson (July 11, 1911 – October 11, 2007) was an American publicist who was highly influential within the classical music world.
 She was a publicist for many important artists during her lengthy career, most notably working closely for several decades with Leonard Bernstein.
 She also notably served as the Metropolitan Opera's press director during the tenure of Edward Johnson and into the early portion of Rudolf Bing's career at the Met. "
The New York Times" stated that, Carson was "widely regarded as the leading lady of classical music publicists in New York, who guided a generation of singers through the Metropolitan Opera and shepherded the career of Leonard Bernstein."
Bernstein/Beethoven is the name of a 1982 Leonard Bernstein miniseries telecast between 1982 and 1983 on both PBS and A&E.
 As with most post-1969 Bernstein programs, it was directed by Humphrey Burton, who was, according to Schuyler Chapin, Bernstein's director of choice.
 It was nominated for an Emmy and won a Cable ACE Award.
 It was filmed largely on location in Vienna and Germany, and not only featured Bernstein but also actor Maximilian Schell, who not only provided commentary on Beethoven, but read from his letters.
Candide is an operetta with music composed by Leonard Bernstein, based on the 1759 novella of the same name by Voltaire.
 The operetta was first performed in 1956 with a libretto by Lillian Hellman; but since 1974 it has been generally performed with a book by Hugh Wheeler which is more faithful to Voltaire's novel.
 The primary lyricist was the poet Richard Wilbur.
 Other contributors to the text were John Latouche, Dorothy Parker, Lillian Hellman, Stephen Sondheim, John Mauceri, John Wells, and Bernstein himself.
 Maurice Peress and Hershy Kay contributed orchestrations.
 Although unsuccessful at its premiere, "Candide" has now overcome the unenthusiastic reaction of early audiences and critics and achieved enormous popularity.
 It is very popular among major music schools as a student show because of the quality of its music and the opportunities it offers to student singers.
For New York (Variations on Themes of Leonard Bernstein) (originally titled To Lenny!
 To Lenny!)
 is a one-movement orchestral composition by the American composer John Williams.
 Written as a tribute to fellow composer and conductor Leonard Bernstein, the piece premiered on the last day of Bernstein's 70th birthday gala at Tanglewood on August 28, 1988.
 The premiere was performed by the Boston Symphony Orchestra under Williams, who was then conductor of its sister orchestra, the Boston Pops.
 Music critic John Rockwell of "The New York Times" described the work as "feathery and flashy."
The Leonard Bernstein Festival of the Creative Arts is an annual event that was started in 1952 by Leonard Bernstein who was both a composer and a Brandeis University faculty member.
 It is sponsored by Brandeis University's Office of the Arts.
The piano composition Four Anniversaries was composed in 1948 by American composer Leonard Bernstein and consists of four movements, each written for a different person in Bernstein’s life.
 Leonard Bernstein composed four other works using the same concept: "Seven Anniversaries" (1943), "Five Anniversaries" (1948–1951), "Two Anniversaries" (1965), and "Thirteen Anniversaries" (1988).
 Each movement celebrates the birthday of a different individual, such as Serge Koussevitzky, Paul Bowles, William Schuman, Stephen Sondheim, and Aaron Copland.
 The "Four Anniversaries" are dedicated to Felicia Montealegre, Johnny Mehegan, David Diamond, and Helen Coates.