Greetings, I have been having a pretty major issue for a while now and I can't seem to understand why. Some days I have great range and I can hit the notes on most of the songs I listen to, but other days I can get nowhere near the range that I can sometimes hit. I can't figure out how to fix this, as my main goal is to increase range. At this point its gotten very frustrating. Any help at all would be very appreciated. Thanks in advance.