That old adage about municipal memory loss and the subsequent misplacement of a certain appendage's cunning is brought to life through Jewish song at the Tower of David Museum. Aeterna Music, the 18 voice Jerusalem Cameri Choir, will return to the museum to perform a set of songs ranging from both Jewish and Israeli songbooks, under the framework of the museum's Pilgrim Notes series. The performance, titled, If I Forget Thee, oh Jerusalem, will include pieces by both composers both Israeli and European. For an extra 20 sheckel, you can also join the Mamilla Stories tour of the neighborhood time forgot, and then remembered and turned into a ritzy mall. Tour is in hebrew, unless there is a critical mass of Anglos. Call ahead for registration.