[citation needed] While attending the Bulgarian State Conservatory, he studied composition under Pancho Vladigerov and conducting under Konstantin Iliev.
[1] He was the author of numerous chamber music pieces as well as symphonic works.
Yossifov also wrote several art songs and one opera, Back to the Beginning.
[2] He conducted numerous ensembles throughout his career including the Bulgarian National Radio Symphony Orchestra.He has conductor the "Aquarius Suits" from Brazilian composer Paiva Netto.
[4] "Prelude and Fuga" No 2, for 2 Pianos, 8 hands, was awarded the Grand-Prix "Kanebo" in Tokyo, Japan at the Sixth International Competition for Piano Duo Composition in 1999.