Answer by taking a quote from the following article:

Najm was born and raised in Tallahassee, Florida. His stage name is short for "Tallahassee Pain", and was chosen because of the hardships he experienced while living there. Najm was brought up in a Muslim household, but he has expressed his lack of interest in the concept of religion. At just three years old he got his first taste of the music business when a friend of the family, gospel jazz artist/producer Ben Tankard, allowed him to spend time and "twist the knobs" at his recording studio.

In 2007, T-Pain began work on his third album with Rocco Valdes, Akon and Lil Wayne. The album was also his first under his Nappy Boy Entertainment.  T-Pain's third studio album, Thr33 Ringz, was released on November 11, 2008. The album sold 168,000 records in its first week, reaching number four on the Billboard 200. A mixtape, Pr33 Ringz, was released in early 2008 before the album.  The album was preceded by three singles. Its lead single, "Can't Believe It", featuring Lil Wayne, was released in July 2008. The single reached number seven on the Hot 100 and number two on the Hot R&B/Hip-Hop Songs chart. The album's second single, "Chopped 'N' Skrewed", featuring Ludacris, was released in September 2008. The single reached number twenty-seven on the Hot 100 and number three on the Hot R&B/Hip-Hop Songs chart. The third and final single from the album, "Freeze", featuring Chris Brown, was released in October 2008 and reached number thirty-eight on the Hot 100 and number thirty-nine on the Hot R&B/Hip-Hop Songs chart. Guest appearances on Thr33 Ringz included T.I., Lil Wayne, Ludacris, DJ Khaled, Ciara, Chris Brown and Kanye West among others. Pr33 Ringz was the introduction mixtape for the album.  In 2008, T-Pain continued to appear on numerous rap singles, such as "She Got It" by 2 Pistols, "Go Girl" by Ciara, "The Boss" by Rick Ross, "Cash Flow" by Ace Hood, "Shawty Get Loose" by Lil Mama, "One More Drink" by Ludacris, and "Go Hard" by DJ Khaled with Kanye West. T-Pain and Ludacris collaborated to perform "Chopped 'N' Skrewed" and "One More Drink" on American late-night television programs Jimmy Kimmel Live! on ABC in November 2008 and on NBC's Saturday Night Live in the same month. T-Pain appeared again on SNL in February 2009 (on the episode hosted by Bradley Cooper with musical guest TV on the Radio) in the SNL Digital Short. T-Pain also supported the album in 2009 with his Thr33 Ringz Tour, which included sold out shows across North America. T-Pain and rapper Lil Wayne formed the duo T-Wayne in 2008. The duo released a self-titled mixtape in late 2008; it charted on the Billboard 200 in January 2009. Their debut album was going to be released in 2009, but never was.  In 2009, T-Pain hosted the BET Awards afterparty and paid tribute to Michael Jackson in West Covina.

What was his highest ranked song?
Its lead single, "Can't Believe It", featuring Lil Wayne, was released in July 2008.