Following the heavy Saturday rain and wind that hit the New Orleans Jazz and Heritage Festival presented by Shell, a few adjustments to the music schedules at the suddenly soggy Fair Grounds were necessary.

New Orleans rhythm-and-blues singer Luke James performed an abbreviated show on the Congo Square Stage. The Big Sam’s Funky Nation set scheduled for the Acura Stage was canceled.

In both instances, the culprit was water on the stages, which had to be cleared before performances could resume.

A parade honoring the late Big Chief Bo Dollis – the singer who pioneered the melding of Mardi Gras Indians music and New Orleans funk and rhythm-and-blues -- was pushed back to just after 3 p.m.

In another change, Ivan Neville’s Dumpstaphunk – possibly the funkiest band at Jazz Fest – started early on the Acura Stage, ahead of the much-anticipated headlining appearance there by classic rockers The Who.

Neville and Dumpstaphunk sent forth their own mighty wall of funk and rock. With the help of the Naughty Professor horns, they raised the roof, sang about mojo women and hoodoo men and, generally speaking, proved themselves to be a classic funk outfit for the 21st century.

Uniquely, and fitting for a funk group, Dumpstaphunk features two bass players. In “Dancin’ to Tha Truth,” Tony Hall and Nick Daniels III played popping unison bass leads.

The Dumpstaphunk show also was a New Orleans family occasion. Singer-keyboardist Ivan Neville and his guitarist cousin, Ian Neville, are Dumpstaphunk regulars. Art Neville, Ivan’s uncle and Ian’s father, sat in to play organ for a few songs.