[1] In 1925, Eckstein was appointed to the Mainfranken Theater Würzburg as movement director, solo dancer and head of the rhythmic courses for the entire staff.
Under the artistic director Carl Ebert, this stage became one of the most progressive German theatres of its time through the Rabenalt-Reinking-Eckstein team (also jokingly dubbed "Rabenkingstein AG").
Here the tried and tested concept of theatre, operetta, opera was implemented with great success for the big city audience with dances in The Regimental Daughter and The Grand Duchess of Gerolstein.
In addition to choreographic work for film, Claire Eckstein received engagements in Werner Finck's Die Katakombe and in the Wintergarten.
Autumn 1932 saw a two-month guest appearance with Edwin Denby for Erik Charell in Paris with The White Horse Inn and in January they were both in the opening programme of Erika Mann's Munich cabaret Die Pfeffermühle [de].