Saycon Sengbloh (born October 23, 1977) is an American actress and singer.
 She was nominated for a Tony Award for Best Featured Actress in a Play and won a Drama Desk Award for Outstanding Featured Actress in a Play for her performance in Danai Gurira' play "Eclipsed" in 2016.
Karen Olivo (born August 7, 1976) is an American stage and television actress, who is known for originating the role of Vanessa in the Tony Award–winning musical "In the Heights" both on and off Broadway.
 She won the Tony Award for Best Featured Actress in a Musical for her performance as Anita (2009–2010) in the revival of "West Side Story".
 She is the first and only actor to win a Tony for a performance in "West Side Story.
Elizabeth Josephine Sullivan Loesser (born August 28, 1927) is an American soprano and the widow of composer Frank Loesser.
 She was nominated for the Tony Award for Best Featured Actress in a Musical in 1957 for her performance as Rosabella in "The Most Happy Fella".
"Somebody Somewhere" is a popular song written by Frank Loesser.
 The song was published in 1956 as part of Loesser's musical "The Most Happy Fella".
The Most Happy Fella is an album by The Jazz Modes led by horn player Julius Watkins and saxophonist Charlie Rouse recorded in 1957 and released on the Atlantic label.
 The album features jazz interpretations of songs from Frank Loesser's broadway musical "The Most Happy Fella".
The Most Happy Fella is a 1956 musical with a book, music, and lyrics by Frank Loesser.
 The story, about a romance between an older man and younger woman, is based on the play "They Knew What They Wanted" by Sidney Howard.
 The original Broadway production ran for 14 months and it has enjoyed several revivals, including one staged by the New York City Opera.
Lillias White (born July 21, 1951) is an American singer and actress of stage, television, and film who is particularly admired for her performances in Broadway musicals.
 In 1989 she won an Obie Award for her performance in the Off-Broadway musical "Romance in Hard Times".
 In 1992 she won a Daytime Emmy Award for Outstanding Performer in a Children's, Pre-School Children's or Family Viewing Program for her portrayal of Rhonda the pink singing squirrel on "Sesame Street".
 In 1997 she won the Tony Award for Best Featured Actress in a Musical and Drama Desk Award for Outstanding Featured Actress in a Musical for portraying Sonja in Cy Coleman's "The Life".
 She was nominated for a Tony Award again in 2010 for her work as Funmilayo in Fela Kuti's "Fela!
".
Scott Waara (born June 5, 1957) is an American actor.
 He made his Broadway debut as a member of the ensemble for the musical "Wind in the Willows", and performed in "Welcome to the Club" and "City of Angels".
 He won the Best Featured Actor Tony Award for his performance of Herman in "The Most Happy Fella" in 1992.
"Big D" is a song about Dallas, Texas written by Frank Loesser in 1956 for the musical "The Most Happy Fella."
 It repeatedly spells out the name of Dallas with the refrain: Big D, little A, double L, A, S.
Marcia Lewis (August 8, 1938 – December 21, 2010) was an American character actress and singer.
 She was nominated twice for the Tony Award as Best Featured Actress in a Musical ("Chicago" and "Grease") and twice for the Drama Desk Award for Outstanding Featured Actress in a Musical ("Chicago" and "Rags").

Question:  Elizabeth Josephine Sullivan Loesser was nominated for the Tony Award for Best Featured Actress in a Musical for her performance as Rosabella in "The Most Happy Fella",  a 1956 musical with a book, music, and lyrics by who?
Answer: Frank Loesser