Yen, I was a guest there several times and I remember Ernie Vann too. I was born and raised in Amsterdam and loved the nice atmosphere there in places like 't Kloppertje. Ernie Vann had that "key song" Cocain Running 'Round my Brain on which he improvised with the text on the actual situation. You'd beter not be late in his show 'cause he made fun out of you while singing this song.