Even though Kelly Clarkson's 'VH1 Unplugged' show doesn't air until Nov. 17, two performance videos have surfaced from her stripped-down set. Clarkson performed solo material onstage for her fans, but she also treated them to a cover performance of 'I Know You Won't,' which is originally sung by Clarkson's fellow 'American Idol' alum Carrie Underwood.

Clarkson has been covering the Underwood tune for some time now, but this is the first time she has performed it on a televised broadcast. The song is off of Underwood's 2007 album 'Carnival Ride,' and it's clear that Clarkson has formed a connection with the melancholy, breakup song. While Underwood maintains a soft, broken-hearted tone in the original verses, Clarkson adds some soul to the lyrics. The song highlights Clarkson's vocal range, as she hits high, glass-shattering notes while also showing off the strength in her voice.

Another video has also hit the Web of Clarkson performing her new single 'What Doesn't Kill You (Stronger).' Accompanied by a full acoustic backing band, Clarkson sounds and looks gorgeous as she performs in her form-fitting red dress. The 'Unplugged' setting is really great for powerful singers like Clarkson, since her voice is really the main focus of the performance.

If you want to catch the full show, be sure to tune in to VH1 on Thursday, Nov. 17 at 7PM EST to see the Kelly Clarkson 'Unplugged' special in its entirety.

Watch Kelly Clarkson Perform Carrie Underwood's 'I Know You Won't'

Watch Kelly Clarkson Perform 'What Doesn't Kill You (Stronger)'