Peter Schat was a pupil of Boulez and played a big role in bringing an awareness of modern music to his country, being part of the 'Notenkrakers' group of young composers and working on the collaborative opera Reconstructie with composers Louis Andriessen, Jan van Vlijmen, Reinbert de Leeuw and Misha Mengelberg and writers Hugo Claus and Harry Nulisch. Schat later went on to write a short string of powerful and original pieces, of which are Thema and To You, which integrate a rock sound in his 12-tone based technique. Still later, Schat developed a strikingly simply method of atonal harmony called the Tone Clock, and he remained its most fervent supporter.