While supplying horn lines, solo parts, arrangements and arrangement hints to many bands and projects, the live playing and recording brought him into the studio or onto the stage with a rather incoherent collection of greats like Mike Stern, Alexander Hacke and Bryan Corbett. He is familiar with the underground venues of the communist era, as well as with the big jazz stages like Jazz in Duketown in 's-Hertogenbosch, Prague, Odessa, Sibiu international jazz festivals, and Jazz at the Birmingham Symphony Hall, likewise with the major dance and electronica festivals in his area.

However, now he prefers to be more occupied with music teaching and to be home with his family and his modest collection of synthesizers and woodwind instruments to enjoy the possibility of a free choice of forms and sounds when composing his own music from scratch. His compositions and improvisations may sometimes sound quite rough but they can always be taken as soothing musical potions for a human soul irritated by modern life's dilemmas.

Another dimension is added by Petr's exploration of the capability of music to express abstract views on questions of modern science. His friends once described his music as not exactly the simplest but a quite comprehensive survival guide in modern times.

Alone