"I'm N Luv (Wit a Stripper)" was T-Pain's second single, following "I'm Sprung
." Both songs are drenched in Auto-Tune, his signature sound. Both songs charted, but many thought the novelty of Auto-Tune would soon wear off and T-Pain would need to stop using it. Those folks were wrong: Many rappers came to him for Auto-Tune treatment, and his second album, released in 2007, was filled with Auto-Tuned hits, including the #1 "Buy U A Drank (Shawty Snappin')
T-Pain didn't just fire up the software and land on his sound. He spent over a year refining it, figuring out how to combine it with his singing so it doesn't sound too robotic but also catches the ear. The software was introduced in 1997 and started showing up as an effect in pop songs in 1999, but T-Pain was the first to popularize it in hip-hop.