It's usually spelled "Iko, Iko"
This is from the bio posted on the BlueFlameCafe website (everyting about the blues) and is about Dr. John the NIght tripper (Mac Rebbenack)
After Gris Gris, Dr. John recorded the albums Babylon and Remedies and The Sun, Moon & Herbs before scoring with Gumbo, an album that was filled with New Orleans roots music. The 1972 work contained flavorful versions of New Orleans standards like "Iko Iko" and "Tipitina." The follow-up Atco record, In the Right Place, featured Dr. John's biggest pop hit, "Right Place, Wrong Time," which made it to number 9 on the charts in 1973.
So to hear Dr. John's version, locate the album Gumbo & look for that track--althoug I've heard it elsewhere.