In this Spanish name, the first or paternal surname is Rabinovich and the second or maternal family name is Aratuz.
Daniel Abraham Rabinovich Aratuz (November 18, 1943 – August 21, 2015) was an Argentine musician, writer, humorist, lawyer and singer. Born in Buenos Aires, Argentina, he cofounded the group Les Luthiers in 1967.[1]
Within Les Luthiers, Rabinovich sang and played guitar, drums, violin, and some of the group's invented instruments (most notably the "basspipe a vara"). He died on August 21, 2015, at the age of 71.[1]