Aspiring Singer, I love it! You have that smooth, jazzy voice just like Norah and it goes so very well with this song. I don't know how to use technical terms to describe this but I like the way your voice stays mellow when you go into the high notes in the song, something I've always admired in Norah's singing. I am a huge fan of her and would love to hear you do more covers of her material. I actually cover "Don't Know Why" pretty frequently. "Sunrise," "Turn Me On," and "Come Away With Me" would suit you really well. Very well done!