u/stewy497

I noticed recently that one of my keys isn't cutting off cleanly when I take my finger off it, instead continuing to let through a small amount of air and "fade out" with a distracting whine or hum.

I tried opening it up and cleaning the reeds and valves with a piece of paper, but it doesn't seem to have made any difference. I noticed at the time that some of the valves are a little bit shorter than their apertures, could that have anything to do with it? Or should I try adjusting the key pads ( I wasn't able to open them up this time).

Fwiw my instrument is a dead ringer for the one in the video.

It's my first time learning anything with chords and I feel like Easy Anglo skipped over some fundamentals. What do the headings on the top of the chart mean? Why does the stave indicate chords, but also buttons, not necessarily corresponding to all the buttons used in the chord?