Perhaps at the beginning of the 1630s, Pękiel belonged to the royal band of Władysław IV Vasa, working there as the organist and deputy of Marco Scacchi - the then Kapellmeister. When he ceased his activity in Poland in 1649, Pękiel was probably the head of the royal team and the first non-Italian in this position. His career did not last long, however, due to the suspension of the band's activity in 1655, caused by the Swedish invasion of Poland known as the Deluge (history).