A - April Showers. 1921 popular song first performed by Al Jolson in the Broadway musical Bombo. Versions by many artists including Bing Crosby, Judy Garland, Frank Sinatra and a spoof version by Morecambe & Wise.
...or..."Down came the RAIN" - novelty hit for English singer/songwriter/ producer Mister (Mitch) Murray in 1965. (Clip on YouTube).
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E Early morning MIST - traditional-style folk instrumental by Celtic Fiddle (2020). (Clip on YouTube)
J JUST Walkin' In The RAIN - Johnny Ray song which was written in 1952 by Johnny Bragg and Robert Riley, two prisoners at Tennessee State Prison in Nashville.
... or... "Louisiana RAIN" by Tom Petty and the Heartbreakers . Features on the 1979 album, "Damn the Torpedoes"
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M MIDSUMMER SUNSHINE - electropop single by Shahin Jay (2022). Clip on Apple Music.
O Over the RAINBOW - song by Judy Garland , which featured in the film, "The Wizard of Oz" (1939). Well-known worldwide and it became her signature tune. Also known as "Somewhere over the rainbow" . Many other singers have recorded versions too.
P PRESSURE DROP - 1969 reggae hit for Jamaican group the Maytals, whose lead singer was Frederick "Toots" Hibbert. The Clash also recorded a wel-known version of the song. Clips of both on YouTube.
R RAIN - Beatles song which is the B-side of their "Paperback writer" single (1966). Recorded during the "Revolver" album studio sessions. An early version of Oasis called themselves "Rain", inspired by the song.