Precociously at age of 17, Chediak already began working professionally as a guitar instructor and also scoring soundtracks for films directed by Jece Valadão and others, also writing string and horn arrangements for recording sessions.
His students included the likes of Gal Costa, Nara Leão, Cazuza, Tim Maia, Carlos Lyra, and Elba Ramalho, among numerous others.
In 1991, Almir Chediak launched his publishing house of CDs "Lumiar Discos"[9] and the Songbooks were now accompanied by CD's that had new and innovative versions of the songs performed by other leading names of Brazilian popular music.
In all, Chediak edited 18 songbooks, featuring artists like Gilberto Gil, Chico Buarque, Djavan, Noel Rosa and Ary Barroso.
While nearing completion on a songbook retrospective of João Bosco and writing a biography of singer Tim Maia, Chediak was attacked by robbers and was shot to death.