Seven years later, artistic collaboration with Nicholas McGegan began; she successfully prepared the City Singing Choir for recordings on Hungaroton Budapest (Brockes Passions by Handel and Telemann).
It was thanks to her artistic reputation that the two ensembles of this choir studio were called upon to give important concerts and produce their first CD only a short time later.
Köhler premiered the cantata "Ohne Natur vergeht unser Leben" by Siegfried Bimberg and Hanna Helling as early as 1996 and recorded it a year later as part of a CD production.
The tenor soloist was the newly appointed choir director of the Stadtsingechor zu Halle, Clemens Flämig.
Under the direction of Köhler, the Stadtsingechor zu Halle was successfully rebuilt into an internationally sought-after concert and oratorio choir.