We’ve heard T-Pain sing without autotune before to wonderful results and NPR invited him back to Washington D.C. for another intimate “NPR Frontrow” session, to celebrate the ten-year anniversary of his debut album Rappa Ternt Sanga. T-Pain shows off his vocal range while debuting a new song called “Officially Yours” and playing some classics as well. Watch the full performance above.

Related: Sorry Kanye, T-Pain Says You’re Not Using Auto-Tune Correctly