@rapier232 said in On Line Theory:
Yes. My problem was I started playing in a Brass Band. I gradually learned what key signatures were, but was never required to know the names of the scales. Just what notes to # or b. So all my playing is just from sheet music, with no theory knowledge whatsoever. I get by, but would like a bit more knowledge.
What I found help me a lot with this use of "theory" was to go over rudimentary books covering all keys and really learning all the phrases that are presented in sections depending on the phrasing concept being addressed (triplets, sixteenth runs, trills, double/triple tonguing). Once you get these phrases "under the finger" and they are committed to muscle memory, inserting new phrases becomes much easier. Perhaps giving that a try may be what you need.