After his time with the a cappella band basta, William Wahl has made a name for himself in recent years as a piano cabaret artist.
In the meantime, he has won many awards, and with "once the best of everything" he presents for the first time and exclusively for the Cologne Comedy Festival the best, funniest and most beautiful songs from a total of twenty-five years on stage: songs from basta to today between elegance and ecstasy!