Harry Simeone (1910-2005) is famous for the chorale named for him performing and recording the hugely popular Christmas classic song "The Little Drummer Boy". The chorale's gentle, pure performance has easily been one of my top few favourite and most beloved Christmas carols all my life, since as far back as I can remember. To this day I continue to feel the exact same about it as I did in childhood - that this is a completely perfect, magical song, recorded with flawless immaculate simplicity, tremendously beautiful and moving.

Here's that timeless treasure:

"The Little Drummer Boy" - Harry Simeone Chorale

Following, from Wikipedia, is some info about this beautiful classic:

"The Little Drummer Boy" (originally known as "Carol of the Drum") is a popular Christmas song written by the American classical music composer and teacher Katherine Kennicott Davis in 1940....// In 1957 it was recorded...by Jack Halloran for his Jack Halloran Singers on their Dot Records album Christmas Is A-Comin'....However, the recording was not released as a single that year. In response to this, Dot's Henry Onorati introduced the song to his friend, Harry Simeone. When 20th Century Fox Records contracted Simeone to make a Christmas album the following year, Simeone hired many of the same singers that had sung in Halloran's version and made a near-identical recording with his newly created Harry Simeone Chorale. It was released on their album Sing We Now of Christmas. The only difference between Simeone's version and Halloran's version was that Simeone's contained finger cymbals, and had been retitled The Little Drummer Boy. Simeone and Onorati claimed and received joint composition credits with Davis, although Simeone did not actually compose, write, or arrange it. // The album and the song were an enormous success, with the single scoring on the U.S. music charts from 1958 to 1962. In 1963, the album was reissued under the title The Little Drummer Boy: A Christmas Festival, capitalizing on the single's popularity. The following year the album was released in stereo. In 1988, The Little Drummer Boy: A Christmas Festival was released on CD by Casablanca Records, and subsequently, on Island Records. Harry Simeone, who in 1964 had signed with Kapp Records, recorded a new version of "The Little Drummer Boy" in 1965 for his album O' Bambino: The Little Drummer Boy. Simeone recorded the song a third and final time in 1981, for an album (again titled The Little Drummer Boy) on the budget Holiday Records label.

See, also, Mr. Simeone's TMDb profile page for further info, in his bio, about both him and the song that's so famously associated with his name.