The first consideration when adjusting a reed for the simple reason that the process is reversible.
First Wire
| Round | Flatten |
| Opens tip | Closes tip |
| Strengthens | Weakens |
| Adds resistance | Lessens resistance |
| Darkens | Brightens |
| Raises (sharpens) pitch | Lowers (flattens) pitch |
Which side of the reed to you play on, wire-up or wire-down?
Choosing which side of the reed to play on is simple: one side of the reed is stronger, and you should play on that side. Using your normal embouchure and air, play F4 (F above the staff) and manipulate this pitch up and down. Do this on both sides of the reed. One side will be stronger, and therefore more stable. Sometimes the difference is stark and sometimes it is subtle. The difference is not always visually obvious.