Drums, horns, dancers, vocalists and colorful costumes will fill the French Quarter streets as the Krewe of Kanaval debuts on Tuesday, February 6. The procession, a joint venture between Ben and Jeanette Jaffe plus the Preservation Hall team and the group Arcade Fire’s Regine Chassagne and Win Butler, takes off from Preservation Hall at 2 p.m. and heads to Congo Square for further festivities. Kanaval, incidentally, is the Haitian kreyol spelling of carnival.

“What we want to express throu...