Together with legendary wind player Peter Wertheimer and the brilliant pianist Yoni Farhi, Keren dedicated a show to composer Kurt Weill that was also performed in the Arthur Rubinstein Piano Competition in 2005.

Keren Hadar, Peter Wertheimer and Yoni Farhi
(Photo: Ariel Besor)
...Not long ago, when I praised Keren Hadar, I made a wish that she sing Kurt Weill-Brecht. Well she has already done it. Keren Hadar sings the songs like I expected her to. Not in the Lenia style but not as a singing actress as well. Hadar is an acting singer. Almost all her acting is expressed through her changing and dynamic voice colors. Her voice is enchanting... 
Rafi Lavi, Ha'ir, 24.6.2006
...Hadar's singing is very stylish. Her interpretation is aware of the meaning of the texts and is attentive to the music... Hadar gives these modern classics the respect they deserve and she is also talented and brave enough to spice it up... 
Gidi Avivi, Haaretz, 13.1.2005