Which 1980 single by Zapp was built around Roger Troutman's talk box vocals?

Which 1980 single by Zapp was built around Roger Troutman’s talk box vocals? “More Bounce to the Ounce.” The debut single introduced Zapp’s signature blend of electronic funk, clipped rhythms and Troutman’s electronically shaped vocal lines.

Troutman wrote, arranged and co-produced the song, while Bootsy Collins produced the recording. Troutman’s talk box routed an instrument’s sound through a tube into his mouth, allowing changes in mouth shape to impose speech-like vowel sounds on the synthesizer or keyboard tone. The effect made his voice sound simultaneously human, robotic and instrumental.

The song began as a demo recorded before Zapp secured its Warner Bros. deal. It became the opening track of the band’s self-titled 1980 debut album and reached No. 2 on the U.S. R&B chart, while also reaching No. 86 on the Billboard Hot 100. Its long groove and distinctive vocal hook became especially influential on electro and later West Coast hip-hop.

“Dance Floor,” “I Can Make You Dance” and “Computer Love” are also important Zapp recordings, but they are later songs. “More Bounce to the Ounce” is the foundational 1980 track most directly associated with Troutman’s breakthrough talk-box sound.