Three of the most recognized names in Jewish music are coming together to launch a new album of rare tunes by Rabbi Shlomo Carlebach. Aaron Razel, Chaim David Saracik and Shlomo Katz will be launching their new album K'Shoshana with a special pre-Hanukka concert this Saturday night at the Shir Chadash synagogue in Jerusalem's German Colony neighorhood. All of the niggunim on the album are taken from old recordings of Reb Shlomo that Katz has been collecting over the years, often taped in intimate settings with just a few hassidim. One of the songs, "Boreh Olam," was recorded by Carlebach during his own sheva brachot. In addition to being an opportunity for Carlebach fans to be exposed to material they've never heard before, the show allows us to hear the interaction between three artists - each having made a name in Jewish music in his own right. Katz's sweet voice is particularly beautiful on the down-tempo title track, written in recognition of the survivors of the Holocaust. The raspy Chaim David is a sort of mentor to the group, having performed with Reb Shlomo himself, yet he's just as likely to be jumping around the stage this Saturday night as any of them. Saturday, 8 p.m., Yehuda Halevi School, 29 Hatzfira St, Jerusalem; NIS 40/50.