Reed Fixation is a story written by Kimyōna Akage. It ran in Issue 38 at http://s2b2.livejournal.com/219867.html, and is mirrored at http://www.shousetsubangbang.com/mirror/reed-fixation/.
From the author: "Justin Preston always wanted to get into Varsity Orchestra but bassoon seats were few and far between. When Carson Finn, Prince of Double Reeds, offers him a chance as an oboe, he takes it. What neither of them expected to discover during private lessons was something extra in common other than a love of double reed instruments."