Konstantin Dragnev graduated from the State Academy of Music in Sofia in 1955 majoring in Trombone. He played at the Jazz of the Youth Ensemble (1949-55), The Optimists Orchestra (1955-61) and the Sofia Orchestra (1961-68). He was chief editor of the recording company Balkanton (1968-85). He created the new recording studio of Balkanton in 1976 and laid the foundations of the group FSB by drawing to the company Rumen Boyadjiev, Konstantin Tzekov and Alexander Baharov. He was Secretary General of the Union of Bulgarian Composers (1985-89). He was President of the Executive Board of the Musicautor Copyright Agency since its establishment (1994-97) and the company’s Vice-President (1997-2001). His artistic activity has been focused on arranging: he arranged over 1,000 songs. He orchestrated TV musicals and also wrote ballet suites; musical plays; film music, etc. Being a good connoisseur of the old urban song, he was among the initiators of the Golden Chestnut Festival in Petrich. He wrote arrangements and produced urban culture songs.

Arrangements:
TV musical plays:

The Man from La Mancha;
Kiss me, Kate.

Of the ballet suites:

Associations.

Film music (in co-authorship with Petar Stupel):
The Old Coin, directed by V. Yanchev (1965);
My Father, the Painter, directed by S. Dimitrov (1973).

Song arrangements:
We loved (music by Atanas Boyadjiev), awarded The Golden Orpheus Grand Prix in 1970;
The Snow of the Memory (music by Petar Stupel);
The Master from Boyana (music by Alexander Yossifov).

Albums of urban culture songs, produced by him:
I Had a Dream of You;
Sweet Songs;
“Songs for the soul”;
On the Road of Life.