(now used by Ensemble Musikfabrik). Since the first iteration of the double bell trumpet built by Gaertner, Blaauw has developed a close working relation with Hub van Laar of Van Laar Trumpets and Flugelhorns in Margraten, the Netherlands. Along with B-flat, C, and piccolo trumpets, Van Laar has also made the quarter-tone flugelhorn (notable for its use in Karlheinz Stockhausen's PIETA from DIENSTAG aus LICHT) and the double bell trumpet that Blaauw now plays. Collaborations and projects Marco Blaauw worked in close collaboration with German composer Karlheinz Stockhausen for 17 years. Beginning in 1998, Marco Blaauw worked intensely with Karlheinz Stockhausen and premiered solo roles in scenes of the opera cycle LICHT. In August 2008, he presented the premiere of "HARMONIES for trumpet" from KLANG for BBC Radio 3 in the Royal Albert Hall. Blaauw has since performed all major works for trumpet by Stockhausen and can be heard on several recordings of the Stockhausen Verlag (see discography). In 2015, Blaauw started working with La Monte Young on “the Second Dream of the High Tension Line Stepdown Transformer" for a concert in the Chelsea Dream House, NYC, and went on to perform to critical acclaim in Warsaw, Huddersfield, Paris, Oslo, Amsterdam, Krems, Cologne, and Polling. This project has since grown into the Monochrome Project – an ensemble of 8 trumpet players – which maintains an active schedule of premieres, including works by Anthony Braxton. Blaauw has also worked in close collaboration with famous German painter Gerhard Richter. Blaauw, with Ensemble Musikfabrik, premiered "Richter's Patterns" by composer Marcus Schmickler at the Kölner Philharmonie in 2016, and Blaauw has continued a close working relationship with the artist since. In 2019, Blaauw played for the premiere of Richter's "Moving Picture 946-3" at the Kiyomizu-dera Temple in Kyoto, Japan. The film was created in collaboration with Corinna Belz (filmmaker) with score for solo trumpet and electronics by Rebecca Saunders and has since also been a featured event at Musikfest Berlin 2020. Recently, Blaauw has been working on the Global Breath project working to record and archive iconographic sounds, as well as connect pioneering trumpet players worldwide. The project will host a conference in March 2021. Teaching Marco Blaauw served on the faculty of the Masters aus LICHT program at the Koninklijk Conservatorium in The Hague, the Netherlands from 2017 until 2019. This one-time masters program served to instruct students in the performance of the