Surprise! A few weeks after Christina Aguilera and James Corden wowed us with a nostalgia-packed edition of Carpool Karaoke, the late-night host just released another video from their adventures around the streets of LA — and it's quite the treat for the ears. In the bonus footage, the duo delivered a Grammy-worthy rendition of Christina's brand-new diva anthem, "Fall in Line," and they absolutely knocked it out of the park. During their joint performance, James impressively hit some off-the-charts high notes, while Christina put her soulful singing chops on display, as per usual. Can these two just go on tour together already?