[1] Once in Munich, West Germany, she was discovered by Werner Müller who accepted her into his orchestra.
Since the mid-1960s, she was an active guest, studio and background singer for numerous bands and acts.
The famous scream in fellow group member Penny McLean's Lady Bump belongs to Walther.
[2] Further, she was one of the backing singers for Donna Summer, Giorgio Moroder and Joy Fleming.
[4] In 1980, she co-founded The Hornettes girl band, along with former Silver Convention singers Lucy Neale, Linda G. Thompson and Jackie Carter.