Line Up 1990 (from left to right):

jlahmann: Trumpet, Vocals
aschneider: Keyboards, Vocals
gmüllerröhlck: Bass
jdackow: Drums
vespitalier: Percussion, Vocals
mfricke: Vibraphone
hueberschaer: Tenor Saxophone, Vocals
ihennek: Vocals
fborchers: Alto Saxophone, Vocals
mhallaschka: Trombone, Vocals
tbrandes alias DJ Freakmaster: Guitars
uszczepanek: Trumpet, Vocals

And besides, but not on the photo:

tnovy: Blues-Harp, Vocals
vceli: Sound Engineering