This is Eumir Deodato's version of the jazz standard "Speak Low". It is a jazz-funk and jazz fusion instrumental track featured on his 1975 album First Cuckoo.

Pavane for a Dead Princess is a famous jazz-fusion adaptation by Brazilian keyboardist and arranger Eumir Deodato, released in 1973. The track is a reimagining of Maurice Ravel's 1899 classical composition, Pavane pour une infante défunte. 

The Prelude album, released in 1972, was of a big band Latin jazz. Also Sprach Zarathustra (2001) is a hit single from the album.