Nick Kletchkovsky was during many years the regular bassist of the BRT Jazzorkest, the Flemish radio big band led by Etienne Verschueren.
In that context, he has the opportunity to play with many famous American and European soloists and arrangers. He played a.o. with Philip Catherine, Sadi, Francy Boland, Bob Porter, Michel Herr, Freddy Sunder etc...
In the sixties, he toured and recorded with singer Caterina Valente.
He also played with old style jazz bands and dance band such Johnny Hot's "The Jump College".
In the seventies, he played and recorded with fusion bands such as Marc Moulin's Placebo and Michel Herr's Solis Lacus. He appears on several albums of those bands, as well as on the LP "Rock Slides" with pianist Scott Bradford, and on an album with German guitarist Siegfried Schwab, "Siegfried Schwab & His Group".
He also played the guitar.