In the EU the rule for a work to be in the public domain is authors year of death + 70 years. So that means that in 2022 that will put us at 1952, 1951 to be sure. Please double check, no guarantee that the list is correct or complete. Keep in mind that a song can have multiple authors and all of them have to be considered.
Died 1950 according to https://en.wikipedia.org/wiki/List_of_deaths_in_rock_and_roll_(1950s)
Died 1950 according to https://en.wikipedia.org/wiki/List_of_deaths_in_rock_and_roll_(1950s)
Died 1951 according to https://en.wikipedia.org/wiki/List_of_deaths_in_rock_and_roll_(1950s)
Died 1937 according to https://en.wikipedia.org/wiki/Bessie_Smith
Died 1937 according to https://en.wikipedia.org/wiki/George_Gershwin