Complex sentence: Once in Canada, Soroczyński and his family began practicing aerial perch and hand-to-hand acts, and soon they were invited by Gilles Ste-Croix to audition as a family for Cirque du Soleil.
Split into simpler sentences: Once in Canada, Soroczyński and his family began practicing aerial perch and hand-to-hand acts. Because of these acts, they were invited by Gilles Ste-Croix to audition as a family for Cirque du Soleil.