by Glenn Miller
Album: Falling In Love With Glenn Miller · 2:59
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![I Know Why (And So Do You) [From "Sun Valley Serenade"] artwork](https://is1-ssl.mzstatic.com/image/thumb/Music114/v4/5e/d1/ad/5ed1ad38-5f42-efae-bb12-aacbcd3d58b5/mzi.njzpminc.jpg/600x600bb.jpg)