What is your favorite Jewish song?

I wanted to tell you how much I love music. I have been playing a string instrument called the cello for 6 years. I practice every day. I mostly play classical music, but my favorite songs to play are Jewish songs. Some of my friends and I have started a band that plays Jewish songs! We have played “Sevivon, Sov Sov Sov” at Hanukkah, and are now working on another song, called “Hevenu Shalom Aleichem”.
 
What is your favorite Jewish song? Please post in on the comment thread below. I can’t wait to see what song you like!