- Sologig "Just Guitar" in Houten
- Offley Trio in Boxmeer feat. Peter Peuker (sax) and Paul Mulder (db)
- Amstel Bigband Christmas Concert @ Badcuyp
- Heuwekemeijer Trio with Sven Schuster (db)
- Sessionopener Gollom (Amsterdam) with Guillaume Ortet (db.) and Efraim Schulz-Wackerbarth (drs.)
- Houseconcert with Anne Brattinga in A'dam
- Half Finals with "Red, Yellow and Blue" at composers competition Art Rocks @ Museum Groningen (with Mathilde Marlon and Sven Schuster)
- Heuwekemeijer Quartet feat. Rosamint Faas and Sven Schuster
- Heuwekemeijer/Hierdeis Duo
- Nicoline Snaas Trio @ Badcuyp Amsterdam
- DUODUO met Andreas Metzler @ Cafe van Leeuwen
- Nicoline Snaas Trio feat. Jan Verwey
- DUODUO @ Cafe de Leeuw, Amsterdam
- Heuwekemijer/Hierdeis in Utrecht (private)
- Bribidao on a boat at the Ijsselmeer (private)
- Bine Kellers Swinging Strings @ Grachten festival (Amsterdam Noord)
- DUODUO @ Oudekerk a/d Amstel
- Akki Haak Band
- Jazzduo with Jan Verwey (chromatic harmonica), Amsterdam
- Martina(voc) and Sebastian Liedke(db) Quartet in Berlin and Wittenberg, Germany
- Duo with Torsten de Winkel at Summerfest Music World Augsburg
- Maiwald/Hierdeis Duo @ Hotel Americain, Amsterdam
- Amstel Bigband @ the International Bigbandcontest Hoofddorp
- McTwo in Wilnis en Marssen
- Wolfgang Keller and family in A'dam
- DUODUO @ Alkmaar
- Akki Haak Band @ Strandtent de Fuut, Scheveningen
- AmstelBigband @ Bethanies Jazzclub
- Bigband concert with Amstel Bigband, JazzFocusBigband and Majazztic Bigband
- Heuwekemijer, Hierdeis and Schuster and guests @ Restaurant L' Express, Amsterdam
- Sessionopener @ Cafe Restaurant NEL (with Dan Herwig, Sven Schuster and Joost Kesselaar)
- Cottonclub Allstarband feat. Ben van den Dungen
- Karlstedt/Hierdeis Duo @ Jazzclub Regentenkamer, Den Haag
- Realtime
- Maiwald/Hierdeis Duo @ Hotel Americain (Amsterdam)
- Bribidao 4tet in Wieringermeer