While not a hit per se, I still rock out to Rainbow’s “Difficult to Cure”, based on Beethoven’s Ninth Symphony (which is too old for this survey, I just realized…)
Red River Valley. I remember hearing it as a rock song from the 1950s. Uh, not that I was alive in the 50s but the song was from the 50s or early 60s. The rock version. The original is 19th century I think.
Louise Tucker’s 1983 “Midnight Blue” (so lonely without you) used the melody of Beethoven’s Pathetique. Barry Manilow’s “Could It Be Magic” began and ended with Chopin’s Prelude in C Minor (I just found that last one out- I thought it was something by Beethoven also.)
The Allman Brothers had a hit with “Statesboro Blues,” which was written by Willie McTell sometime in the 1920s, and originally recorded by McTell in 1928.
There is a house in New Orleans…
I would like to add Black Betty, but that one seems to date to the 18th century and oddly enough is probably about a gun.
Waaay before the time span specified, but the 1965 hit “Lovers’ Concerto” by The Toys was rearranged and given lyrics by Sandy Linzer and Denny Randell based on the Minuet in G Minor written before 1725 by Christian Petzoldt and collected and harmonized in that year by none other than Johann Sebastian Bach.
Along the same lines, and fitting the definition, Sergei Rachmaninoff wrpote his Piano Concerto No. 2 between 1900 and 1902; the theme from the adagio final movement was adapted to serve as the basis for Eric Carmen’s 1976 “All by Myself.”
Judy Collins had a #5 hit with “Amazing Grace,” written in 1772.
In 1967, the Fifth Estate had #11 hit single of “Ding Dong the Witch is Dead” from 1939.
A lot of blues rock musicians of the 60s and later had successful songs that were remakes of older blues songs.
For instance, The Rolling Stone’s had “Love in Vain,” a Robert Johnson song from the 30s.
Led Zeppelin’s “When the Levee Breaks” is based on a Memphis Minnie song from 1929.
Cream had an FM radio hit with Skip James’s “I’m So Glad” from around 1931.