Alexander Arutjunjan
Alexander Arutjunjan (sometimes written Arutiunian or Arutyunyan) was a Armenian composer who lived from 1920 to 2012.
He is most famous for his Trumpet Concerto in A flat, composed in 1950, which is a staple of the trumpet repertoire. There are accompaniment tracks for the concerto on this website, along with another of Arutjunjans trumpet works, the Aria et Scherzo. Links can be found below.