Taylor Swift hit the Z100 Jingle Ball stage at Madison Square Garden last night (Dec. 7) and gave her usual: awkward dancing and a whole lot of enthusiasm. However, this time, she also had a few special guests to join her on some duets: B.o.B and future tourmate Ed Sheeran!

In Swift's solo performances, her voice was much less strained than usual in videos of her singing live. She seems to fare better in actual concerts than in televised events. While she occasionally had issues hitting certain notes in particularly higher and lower registers, her renditions of 'State of Grace' and 'I Knew You Were Trouble' were actually some of the best we've heard yet.

That strength continued on her duet with Sheeran, 'Everything Has Changed.' Sporting her new uniform of high waisted shorts, this time in red (because obviously) and a sparkly top, T-Swizzle rocked a red (because obviously) guitar and microphone. Her voice was great early in the song, but when Sheeran came onstage to join her, the crowd squealed. They love that adorable ginger! The duo have a great musical chemistry and clearly enjoy performing together. Their hug at the end of the song was almost too cute to watch.

Swift also joined rapper B.o.B onstage for a performance of their song 'Both of Us.' The camaraderie between Swift and everyone she works with is palpable. Aside from being one of the most marketable musicians in the business today, she also appears to be simply one of the nicest and most well-liked.

Watch Taylor Swift + Ed Sheeran Perform 'Everything Has Changed' at Z100 Jingle Ball 2012

Watch Taylor Swift Perform 'State of Grace' at Z100 Jingle Ball 2012

Watch Taylor Swift Perform 'We Are Never Ever Getting Back Together' at Z100 Jingle Ball 2012

Watch Taylor Swift + B.o.B Perform 'Both of Us' at Z100 Jingle Ball 2012

Watch Taylor Swift Perform 'You Belong With Me' at Z100 Jingle Ball 2012

Watch Taylor Swift Perform 'Love Story' at Z100 Jingle Ball 2012