He has written, composed, and arranged songs for the likes of Luis Miguel, Plácido Domingo, Nino Bravo, Julio Iglesias,[3] Raphael, Hernaldo Zúñiga, José José,[4] José Luis Rodríguez,[5] Emmanuel,[6] Enrique Guzmán, Isabel Pantoja, Rocío Jurado, Rudy Marquez, and Jeanette, among many others.

Manuel Alejandro was born in 1932 in Jerez de la Frontera–Cádiz.

He is the son of one of Spain's most renowned contemporary symphonists, Germán Álvarez Beigbeder.

The list includes such hits as: He continued writing a few songs during the 1970s, but reached his peak in the early 1980s with the release of consecutive albums with songs performed by different international artists.

A whole generation grew up listening to songs written by him, although not many knew he was the man behind those hits.