Just in time for Hanukkah to start on the night of Dec. 18 and fresh off their visit to a packed Temple Israel to perform last week, Jewish a cappella group Six13 released their annual Hanukkah medley, Elton Johnukah, this year channeling the legendary Elton John. Borrowing from the classics Tiny Dancer, Crocodile Rock and Rocket Man — as well as some of Sir Elton’s classic eyewear, — this is a terrific way to welcome the holiday.