Koehnlein‘s trio is extended to the quartet with Berlin saxophonist Volker Schlott. It continues the style and conception of the trio. In the spring of 2000 the CD “Dieter Koehnlein Quartet: Live“ was released.

“An exceptional quartet, vibrating vitally and playing together with a dreamlike sureness; energetic, hard."
Thomas Wirth, Fraenkische Landeszeitung

"Each one a master of his instrument, everyone as concentrated in communicative ensemble play as they are on inspired soloist paths."
Gerd Fuerstenberger, Fuerther Nachrichten