Carlos Beltrán Martínez de Castro (born 1956) is a Mexican multi-keyboard player.
He undertook classical training since his childhood days, and this formative years would influence his later composing outcome. In the early 1970s he was attracted to the sound of progressive rock of bands like Renaissance and Focus, but also to the so-called soft rock produced by performers like America and James Taylor. In 1987 Carlos released his only album to date, "Jericho", where he played all instruments, basically keyboards and percussion, whose sound was reminiscent of Klaus Schulze. The album didn't stir any grounds in his native country, but it was critically acclaimed, first in Japan, and then in other progressive quarters of Europe. Growing ever dissatisfied with the rock scene in Mexico, he opted to retire, but not before he distributed a home-made tape simply called "Familia Carbajal", where his expanding abilities as composer were evidenced. In 1997 "Jericho" appeared in CD format, making it accessible for a new generation of listeners from around the world.