“Birkholz’ „Into the Blue“for violin, piano and pre-recorded tape inhabits a well-defined cosmos; high, low, ringing and buzzing. None of the instruments are played conventionally, and therefore always make surprising sounds. It is a piece of music well worth listening to.“
„Claudia Birkholz is brilliant on the prepared piano“
„ The offering in Weiden (...) can be called in good conscience the highlight of the artistic season. Claudia Birkholz prepared the piano with nuts and bolts to achieve a truly masterful concert with works by John Cage."
"Highly interesting and certainly one of, if not the highlight of the evening concert were the 5 piano works by Henry Cowell. Cowell is unfortunately played very seldom and hardly ever at this level of excellence."
"Claudia Birkholz seemed to be carried along by the wavelike mood swings and the award-winning artist played with refreshing lightness as well."
"(Claudia Birkholz) leads the audience into the realm of the exotic and of meditation with her highly expressive, many faceted and brightly coloured performance."
" She not only has the whole range of shadings at her fingertips, but also and above all, the ability to recreate for the audience the visions which inspired the composer.“