WebMichael "Slyde" Jennings. Zapp (also known as the Zapp Band, Zapp & Roger) is an American funk band that emerged from Dayton, Ohio, United States, in 1977. Particularly influential in the electro subgenre of funk, Zapp were known for their trademark use of the talk-box effect. The original line-up consisted of four Troutman brothers—frontman ...