Blaauw works in close collaboration with both the established and younger composers of our time. Many composers have written works especially for Blaauw, such as Peter Eötvös, Georg Friedrich Haas, Rebecca Saunders, Wolfgang Rihm, and John Zorn. Blaauw also worked intensely with Karlheinz Stockhausen for 17 years.

In 2015 he established the trumpet ensemble Monochrome Project. In direct communication with La Monte Young, he presented the eight trumpet version of The Second Dream of the High Tension Line Stepdown Transformer, to audiences throughout Europe.

Marco Blaauw initiated Global Breath in 2016, a worldwide research project on the trumpet. The first stage of this research will culminate in a presentation of international pioneers from different genres and cultural backgrounds in the Global Trumpets festival.

Last year Blaauw intensified his collaboration with painter Gerhard Richter and film maker Corinna Belz, producing the sound track to the film MOVING PICTURE 946-3, with music for trumpet and live electronics by Rebecca Saunders. From 2020 onwards he will present this project in festivals, concert halls, museums and art galleries.

Blaauw is also intensely active as a teacher, f.e. in international master classes, the Royal Conservatory of The Hague, the International Darmstadt Summer Courses, at the Stockhausen courses and the Lucerne Festival Academy.