The first album of the Cosmic Voices from Bulgaria - “The Choice”, came out in 1994. It marked the beginning of the many other recordings:
2000 – “A Portrait of Nikolai Kaufmann”
Anniversary album of Professor Kaufmann, featuring by " Les Mysteres des Voix Bulgares", "Cosmic Voices of Bulgaria" and choir of ensemble "Pirin". Released by Riva Sound Records.
1998 – “Conscious nega (subconscious)”
Recordings with the Japanese accordionist Coba. The CD is released by EMI Music Japan Inc.
1996 “Jewish songs”
Songs arranged by Professor Nikolai Kaufmann. Released by KVZ Music.