In 2012, after composing for audiovisuals for over 2 decades, Renger decided he wanted to become a filmcomposer. In 2017 he won his first Buma Award for best filmscore ['Bezness as usual'  from director Alex Pitstra]. In 2019 he was introduced to choreographer Dunja Joçic and they started working on 'The Resident'. This became a fruitful cooperation: in 2021 'De Panter' Dunja received a Swan [best contemporary dance production] for her choreography and Renger won his second Buma Award for best music. 

In 2022 Renger worked on 3 contemporary dance productions with Dunja: 'The Previous Owner', 'We, Us and other games'  [for Spellbound dance company - Rome / Italy] and 'Het gras hier is groener'.

For Siba Sahabi's dance production 'Skiagraphia', directed by Marinus Groothof, Renger wrote a 65 min score.

In 2023 he was nominated again for a Buma Award for his music in the immersive theatre production 'Hotel Wonderland'. Renger composed over 4 hours of music for this highly acclaimed theatre production in cooperation with Cinereal Los Angeles.

In 2023 Renger scored 'The Occupant', a science-fiction thriller directed by Hugo Keijzer, set for release in 2024.

2024 'The Gate', again a Dunja Joçic dance piece, which premiered 23rd of March 2024 in Bielefeld / Germany.
'Sobibor' a documentary series for Submarine & BNNVARA. [release Dec 24]
'Night at the Museum' a theatre production premier Nov 24

Febr. 2025 premiere 'The whole world's gone missing' in Wiesbaden, full orchestral piece.