Take one of the best songs from Taylor Swift's 'Red' album, add a pink ukulele and a bubbly interpretation by a talented young singer and you have a can't-miss YouTube moment. This cover of 'Stay, Stay, Stay' (our pick for Swift's next country single, if she's reading) will only irritate you if you're hell-bent on being a grump all day long. 

The singer, who goes by MusicByMS (probably not her real name), has a bunch of fun covers and originals on YouTube, and with over 22,000 subscribers, she's quite popular. We can see why. The teen has a pretty voice, and she's creative with the songs she chooses. In addition to ukulele and guitar, she also plays violin and piano ... and the occasional cup.