I was practicing this morning and for the first time I was having a buzz from my G string. I kept looking for a problem and finding nothing it would go away and come back. Finely I noticed it was the cuff button on my right sleeve resting on the string some of the time. I rolled up my sleeve and it went away
Sometimes it's the silliest things!
Cliff
I was in my local guitar shop trying out ukuleles this Winter. Everything I played sounded flat and muffled. Looked down and found the sleeve of my fleece jacket covering the strings and sound hole.