The trio Ktzat Acheret ("A Little Different") was an eclectic progressive rock band active in 1974-75. They are considered pivotal in the history of the small Israeli progressive rock scene during the 1970s, a movement that produced a handful of gifted artists little-known outside that country. The band is also sometimes known by the name of their only LP, "Nonames." Ktzat Acheret included Shlomo Gronich, a classical prodigy who also loved rock music. His first album in 1971, 'Why Didn't You Tell Me?', is considered by many to be the first Israeli prog rock recording and displays many aspects of classical, jazz, and traditional Jewish music. He was joined by Shlomo Ydov and Shem-Tov Levi in the group. Ktzat Acheret reformed and toured in 1991 and the members have sporadically performed together since then.

Levi and Ydov were two thirds of a later progressive rock group, Tuned Tone.