Question: Which opera did this American composer and pianist whose Broadway show songs were included in The Passing Show of 1916 compose?

Context articles: Edwin Orion Brownell
Basil Hallam
Phillip Boykin
Robert Emmett Keane
Sam Stryke
The Passing Show of 1918
George Gershwin
The Passing Show of 1916
The Passing Show
George Handy

Edwin Orion Brownell (born November 30, 1964 in Ottawa, Ontario) is a Canadian pianist.
 He is a neo-classical composer and concert pianist whose original music has been described as highly melodic; a strong blues influence upon a solid classical foundation.
Basil Hallam (3 April 1889 – 20 August 1916), born Basil Hallam Radford, was an English actor and singer best known for the character of Gilbert the Filbert in "The Passing Show".
Phillip Boykin (sometimes credited as Phillip Lamar Boykin) is an American bass-baritone, broadway, gospel, jazz and opera singer, film and stage actor.
 In 2017 he was featured in the Broadway revival of "Sunday in the Park with George" and made Broadway history as the first African-American Boatman/Lee Randolph while reopening Broadway's newest and oldest theater at the time The Hudson Theater New York City which played it last Broadway show in 1968.
 Phillip will play the role of Tonton Julian in the Revival of "Once On This Island".
 He was also featured in On the Town at the Lyric Theater.
 He was nominated for the Tony Award, as well as the Drama Desk and Outer Critic Circle Award for Outstanding Featured Actor in a Musical for his role as Crown in the Broadway revival of (Porgy and Bess).
 He was awarded the Theater World Award for his Outstanding Broadway debut.
 He is the founder and director of "The NYGospel Brothers" a Gospel Quartet that travels around the world spreading the good news.
 One of ten children, Boykin grew up in Greenville, South Carolina.
 He started studies in Opera Performance at South Carolina State College before transferring to the North Carolina School of the Arts.
 He left NCSA in 1990 and moved to the Hartt School of the University of Hartford where he received his Bachelor of Music in Vocal Performance in 1995.
 He later studied toward a Master's degree in Opera and Jazz Vocals from Howard University.
 He was seen on the big screen in Freedom starring Cuba Gooding Jr., Top Five starring Chris Rock and Easter Mysteries written by Tony Award Winning Broadway producer John O’Boyle.
Robert Emmett Keane (March 4, 1883 – July 2, 1981) was an American actor of both the stage and screen.
 He was also known professionally by the names: Emmett Keane, Robert Keane, R. Emmett Keane, and Robert E. Keane.
 He began on stage in the 1910s, with his first Broadway appearance being in the 1914 production of "The Passing Show of 1914".
 He would continue on the stage through the mid-1930s, appearing in both London and New York theater productions.
 His film career began in 1930, and over the twenty-five years of that career he would appear in between 170–200 films.
 At the very tail end of his acting life he would make several appearances on the small screen.
 Married twice, the first time would be a short-lived union with Muriel Inetta Window, an opera singer, vaudeville actress and 1913 Peacock Girl with the Ziegfeld Follies.
 They were married in approximately 1916 and divorced in 1920.
 After his divorce, he would marry the actress Claire Whitney in 1921, and they would remain married until her death in 1969.
 He retired in 1958, and would die on July 2, 1981 and be buried in Forest Lawn Memorial Park in Los Angeles, next to his wife, Claire (although her grave is unmarked).
Sam Stryke is the artist name of Sam Struyk (pronounced Sam Strike).
 Stryke is an American composer and contemporary pianist whose self-produced first album, "In the Wind" led him to be signed by Atlantic Records in 1991.
 Stryke has independently released the instrumental album "Emerging" in 2002 and his popular CD, "Christmas", which includes adaptations of classic Christmas carols, along with several original compositions in 2006.
 Stryke released his fourth album, a pop jazz CD entitled "Brunch", in April 2010.
 Also in 2010 Stryke released his second Christmas CD, "Joy to the World" featuring piano and orchestra arrangements of traditional carols.
The Passing Show of 1918 is a Broadway musical revue featuring music of Sigmund Romberg and Jean Schwartz (and other songwriters), with book and lyrics by Harold R. Atteridge.
 The show introduced the hit songs "I'm Forever Blowing Bubbles" and "Smiles".
George Jacob Gershwin ( ; September 26, 1898 July 11, 1937) was an American composer and pianist.
 Gershwin's compositions spanned both popular and classical genres, and his most popular melodies are widely known.
 Among his best-known works are the orchestral compositions "Rhapsody in Blue" (1924) and "An American in Paris" (1928) as well as the opera "Porgy and Bess" (1935).
The Passing Show of 1916 is a revue featuring the music of Sigmund Romberg and Otto Motzan, with book and lyrics by Harold R. Atteridge.
 It included the first George Gershwin songs introduced in a Broadway show.
The Passing Show was a musical revue in three acts, billed as a "topical extravaganza", with a book and lyrics by Sydney Rosenfeld and music by Ludwig Engländer and various other composers.
 It featured spoofs of theatrical productions of the past season.
 The show was presented in 1894 by George Lederer at the Casino Theatre.
 It was one of the first musical revues on Broadway and led the fashion for such productions.
 The Casino Theatre produced a revue each summer thereafter for several seasons.
George Handy (born George Joseph Hendleman) (January 17, 1920 – January 8, 1997) was a jazz arranger, composer and pianist whose musical beginnings were fostered under the tutelage of composer Aaron Copland.
 While he had an impressive career as a pianist, he is best known in retrospect for his bebop arrangements.