People refer to Theodosii Spassov as “the kaval player of the world”. He is a musician with a huge fan base. We know him as a virtuoso performer on the kaval, who can play any folk tune in style. He is even better known for his original ideas, accomplished through involvement of musicians from different genres. He was the first to play jazz on the “kaval”, and his blending of folk music with elements of jazz and classical music is the basis of almost all of his original pieces. Theodoss Spasov has performed with folk, jazz and classical orchestras and ensembles, with prominent Bulgarian and foreign musicians, including the Bulgarian National Radio music ensembles, Le Mystère des Voix Bulgares project, the Philip Koutev Ensemble, Ivo Papazov, Georgi Yanev, Petar Ralchev, Milcho Leviev, Yıldız İbrahimova, Simeon Shterev, Veselin Nıkolov, Petar Petrov, Anatoliy Vapirov, Acoustic Version, the band of the Indian percussionist Trilok Gurtu, Rabih Abou-Khalil, Glen Velez, Dave Liebman,Glen Moore, Mino Cinélu, Paul McCandless, Billy Cobham, Marc Johnson, Kazumi Watanabe, Bruce Dickinson. In recent years he has composed film and theatre music and pieces for symphony orchestra and kaval. He has recorded over 38 CDs, containing solo performances and collaborations with various musical formations. At Bansko Jazz Festival 2024 Theodossi Spasov is to perform with a quartet featuring two Bulgarian musicians living abroad and a double bassist from Switzerland.