Alida Chelli sang "Sinno Me Morro" for the soundtrack of the 1959 B&W movie "Un Maledetto Imbroglio" directed by Vittorio de Sica and starring a then young and very lovely Claudia Cardinale. The superb song was composed by Carlo Rustichelli, and remains one of my favorite songs to this day. imho, the recording released on the RCA Italiana LP of the OST remains unsurpassed in the six decades since, in spite of its lo-fi nature in the version that survives, based on the YouTube videos available. I have come to mentally filter out the distortion and the noise and to savor the beauty of the song, but what a pity that a pristine decently-recorded original may not be available. Alida Chelli's singing is perfection itself, moves along at a steady pace without dwelling and brings out the drama, the pathos and the undying love by its very restraint, though there is sufficient use of skilful embroidery. The quality of her singing shines through the limitations of the recording. Here is a YT video posted by YT user "windbird" of Alida Chelli's OST version, with small clips of the movie for context.
Here is a YT video (posted by YT user "777mylene") beginning with a couple of pivotal scenes from the movie with the song embedded in the soundtrack as the background, and ending (from about 5:40) with a montage of shots from the movie with the song in the foreground. The recording has been smoothed a little, though.
Every subsequent recording or performance by others imho falls a little short of the original in the singing and often the arrangement, more so when covered by amateur singers. There have been quite a few covers since, including some by singers of note such as Kishi Yoko and Gabriella Ferri. Of the versions by the always fabulous Kishi Yoko available on YT, the first (posted by "AyakoFuji2") of the following two treasurable ones comes closest to capturing the emotion of the movie, and uses the Italian lyrics. The second (posted by "ifyougoaway3") which uses Japanese lyrics for the most part, shows off her beautiful voice even better but loses a little of the drama and forlorn tone of Alida Chelli's original.
The redoubtable Gabriella Ferri also recorded the song multiple times. imho, the version from the 1970 album "Gabriella Ferri" comes closest to capturing the emotion in the movie, as compared with her other versions of which most have better recording quality. Video posted by YT user "zvjezd01".
though Gabriella Ferri's version on her 1969 album "Roma Canta" is also quite beautiful and veers a bit more toward the side of a resigned and forlorn tone than the 1970 version. Video posted by YT in the "Gabriella Ferri - Topic" channel.