Marin Valchanov graduated from the State Academy of Music in 1973 majoring in Bassoon under Professor Hristo Proshkov. Studied Composition under Professor Pencho Stoyanov and Professor LazarВ Nikolov. In 1971 he joined the Bulgarian National Radio Symphony Orchestra as soloist-group leader. In 1974 he was prizewinner at the 6th National Competition for Singers and Instrumentalists. In 1977 he joined the staff of the State Academy teaching Bassoon and in 1998 was promoted full professor. He has had an active concert activity in Bulgaria and abroad as soloist and performer of chamber music. He has been involved with the Academic Wind Quintet including leading wind instruments professors of the State Academy of Music. The ensemble has a rich repertoire. Several Bulgarian composers dedicated works to it.

He composed two chamber operas; orchestral music; chamber works; songs; film scores, etc. His compositions and particularly the chamber instrumental ones were performed in Europe, Asia, the USA and Latin America. In 1988 he took part in the Decade of the Bulgarian Culture in Germany.

Chamber operas:
“Faith” for soprano, female voices choir, children’s choir and instrumental ensemble (1995);
“Hope” for soprano, female voices choir and instrumental ensemble (1997).

Works for symphony orchestra:
Concert Dialogues (1983);
Symphonic Poem (1986).
“Test” for symphony orchestra (2006);
“The Curious Dialogue” for flute, oboe and orchestra (2008);
Concerto for cello and orchestra (2011);
“Impulses” for bassoon and strings (2012);
“Salute” for brass quintet (2 trumpets, 2 French horns, trombone) and symphony orchestra (the work is dedicated to the Academy of Music – 2014).

Concertos:

Concert for clarinet and orchestra (1992);
Concert for flute and orchestra (1996).

Works for string orchestra:
Capriccio for violin and orchestra (1982);
Dialogues N2 for four French horns and orchestra (1995).

Chamber Music:
“Hope and Disappointment” for 12 trombones and tube (1993);
Wind Quintet (1980);
Brass Quintet (1991);
“Cycle of Songs to Japan” for flute, oboe, clarinet, bassoon and French horn (1994); “Jokes” for woodwind quintet (2001).

Quartets:

Quartet for four trombones (1999);
“Moods” for four clarinets (2001).
“Reminder” for 4 bassoons (2009) – dedicated to the anniversary of Prof. Lazar Nikolov; Three Miniatures for 4 Flutes (2014).

Trios:

Trio for flute, violin and piano (1981);
Trio for clarinet, piano and percussion (1987);
Trio Sonata for oboe, clarinet and bassoon (1990).
“Illusions” for clarinet, trombone and cello (2014)

For clarinet and piano:

Rondo (1976);
Sonata (1979).
Fantasy for Flute and Piano (1978);
Токата за фагот и пиано (1986 г.).
Three Miniatures for clarinet solo (1982);
Challenge for bassoon solo (1984).