The 50's--This is a long one:
"The Toast of New Orleans" (1950)--Mario Lanza and Kathryn Grayson belt out a good score that had one Monster hit "Be My Love". Bits of opera are scattered through the film.
"Let's Dance" (1950)--Overlooked, underrated musical teams Fred Astaire and Betty Hutton; film has too involved a plot for its' own good, but Frank Loesser's score is good. "Piano Dance" and "Oh Them Dudes" are two numbers to watch for.
"Annie Get Your Gun" (1950)--Betty Hutton and Howard Keel star in this musical bio of Annie Oakley. Film's a delight. Songs: "Anything You Can Do, I Can Do Better", "I'm an Indian Too", and many more. Film has one of Hutton's two or three best performances.
"Summer Stock" (1950)--Garland's last completed MGM film has a good score, a memorable dance with Gene Kelly and a newspaper, and of course Garland's "Get Happy".
"Nancy Goes to Rio" (1950)--Ann Sothern in her last MGM film, petite blonde Jane Powell officially grows up (she started out as a child star) , and Carmen Miranda has a song called "Caroon Pa Pa" which is a number that looks like it was cut from "The Gang's All Here" (1943) because it was too crazy.
"Royal Wedding" (1951)--Astaire dances on the ceiling in this one, and Jane Powell shows her skill as a comedienne. Sarah Churchill is blah, but her part's too small to do serious damage to the film.
"Show Boat" (1951)--Kathryn Grayson, Howard Keel, Ava Gardner, and William Warfield sings "Ol' Man River". Not quite as good as the 1936 version, but deserves a watch.
"Calamity Jane" (1953)--Doris Day in the title role, and Howard Keel costars. Oscar winning hit; "Secret Love", the gem of an underrated score.
"Kiss Me Kate" (1953)--MGM adaptation of a 1948 Cole Porter Broadway hit sets "The Taming of the Shrew" to music, and includes backstage stories of the actors. Kathryn Grayson, Howard Keel, and Ann Miller star. Songs: "Where is the Life That Late I Led", "Too Darn Hot", "Wunderbar", etc.
"Easy to Love" (1954)--Esther Williams film you didn't list; Busby Berkeley choreographed.
"Torch Song" (1953)--Joan Crawford musical is a high camp delight. A must see.
"There's No Business Like Show Business" (1954)--Marilyn Monroe, Ethel Merman, and co. star in this gaudy, sentimental musical. Marilyn's numbers are very good; "Heat Wave" shows her putting on her "sex symbol" image. A fun watch.
"Daddy Long Legs" (1955)--Astaire and Leslie Caron. TCM is showing this the 27th. Song; the Oscar nominated "Something's Gotta Give".
"Love Me or Leave Me" (1955)--Doris Day musical bio of Ruth Etting is excellent. TCM is showing this on James Cagney's day in August.
"Hit the Deck" (1955)--Stars Debbie Reynolds, Jane Powell, and Ann Miller in another overlooked musical that's a favorite of mine. Song "Hallelujah" was excerpted in "That's Entertainment!" (1974).
"It's Always Fair Weather" (1955)--Starring Gene Kelly, Cyd Charisse, and Dolores Gray. Cynical musical is a delight. Gray steals the show with her tantrum throwing, insincerity oozing, talk show host. Song; "Thanks A Lot But No Thanks".
"Kismet"--Starring Howard Keel, Dolores Gray, and Ann Blyth. One of Vincente Minnelli's lesser musicals, film is better than its' reputation. Film is very worth a watch.
"The Best Things in Life Are Free" (1956)--Starring Gordon MacRae, Sheree North, film is a Tin Pan Alley bio film loaded with music. Highlight--Sheree North doing the "Black Bottom".
"The Girl Can't Help It" (1956)--Frank Tashlin film starring Jayne Mansfield and lots of early rock n' roll acts.
"Funny Face" (1957)--Fred Astaire, Audrey Hepburn (doing her own singing) and Kay Thompson. Delightful film. Songs: "Clap Your Hands" (which Thompson steals from Astaire), "Think Pink", "How Long Has This Been Going On?", etc.
"Les Girls" (1957)--Starring Gene Kelly, Kay Kendall, and Mitzi Gaynor. Cukor directed musical is intermittently delightful, is never less than amusing. Cole Porter contributed one of his last scores.
"Damn Yankees" (1958)--Baseball musical stars Tab Hunter, Gwen Verdon, and Ray Walston. Hunter makes a deal with the Devil (Walston) to get his team in the playoffs. Song: "Whatever Lola Wants, Lola Gets".
"Saint Louis Woman" (1958)--Stars Nat King Cole, Earth Kitt, Pearl Bailey, Ella Fitzgerald, etc. Lousy story, Fine music.
"Porgy and Bess" (1959)--Starring Dorothy Dandridge, Pearl Bailey, etc. Supposed to be good, IF it can be found.