Effective period / Period of releases: 1969 - 2000

Members: Aleksander Michalski, Halina Frąckowiak, Marian Zimiński, Stefan Sendecki, Zbigniew Karwacki, Mirosław Męczyński, Andrzej Mikołajczak, Marek Mataczyński, Andrzej Nebeski, Wojciech Gąssowski, Tadeusz Gogosz, Tomasz Myśków, Andrzej Pawlik, Jerzy Kozłowski, Maria Głuchowska, Grzegorz Szczepaniak

Vocal-instrumental ensemble formed in January 1969 in Warsaw under the name of the "Group O!". First line-up:
Zbigniew Karwański (saxophone), Aleksander Michalski (saxophone), Andrzej Mikołajczak (organ), Andrzej Nebeski (drums), Hubert Szymczyński (bass guitar, vocals).
He made his debut on Feb. 11, 1969, in "Telewizyjny Ekran Młodych", which - by way of plebiscite - has been given a name derived from the title of the first hit "My ABC".
In April 1969 the band was joined by singers: Halina Frąckowiak, Wojciech Gąssowski, Jerzy Kozłowski.
He took part in recording the music for the film Grupa ABC, Zespół Instrumentalny Pod Dyrekcją Andrzeja Korzyńskiego, Trubadurzy - Muzyka Z Filmu Polowanie Na Muchy (director: Andrzej Wajda). In 1973 was disbanding.