The BinG! Coaches

Alexander Koller, a long-standing barbershop singer, founded the European Harmony Brigade in 2015 and is a certified music judge for the BHS.

Kerstin is well known in the barbershop world as an organiser and presenter of numerous national and international events, as well as a singer and vocal coach in various quartets and across all vocal ranges.

In 2013, Lucas and his quartet "Halftones" were crowned European champions in the men’s quartet category, and shortly afterwards he won two silver medals at the vokal.total A-cappella Festival in Graz. Lucas is currently a candidate judge on the BHS programme and a co-founder of the European Harmony Academy.

Mareike focuses on bringing out an authentic performance and the unique sound of an ensemble. In doing so, she places particular emphasis on the distinctive features of the English language.

Even whilst studying to become a music and biology teacher, Miriam taught singing, led a girls’ ensemble, and has been coaching pop and jazz choirs ever since.

Norbert is a founding member of BinG! and is one of the driving forces behind further education, with the annual Harmony Colleges and the new European Harmony Academy. He is a certified music judge with the BHS.

Stefanie has been singing barbershop for 15 years, is a co-founder of the European Harmony Brigade and is a certified performance judge with the BHS.