The value of wind has increased a bit with the LoY/PoP/LDoN expansions.
Wind bonus affects how many disease/curse counters are removed by the 44/52 LoY Aria songs.
Having said that, its important to at least equip a basic wind, 1.8 mod minimum, vs the 1.0 singing mod. The difference between 1.8 and the 2.1 on this flute is less dramatic.
In LDoN, where traps can affect the whole party, it can be helpful for the bard to help memove the disease/curse. Plus, these songs probably have the coolest graphics (pacman anyone?) we get from a song....a lot of fun at parties.