Five days ago, the last thing I practiced was lip slurs, E to A, and filled out the complete practice chart. Previously, I did the aperture corner exercises. Stopped for the day. The next day, I had trouble playing low C, could not play above 2nd line G. I could not play anything lower than A below the staff. I had trouble flapping my lips. I decided I must have overdone the exercises, and I took the day off. The second day, I could not play. I could flap my lips some and decided to take the day off again. On the third day, I could flap and play notes up to a C in the staff and notes below the staff, but no pedal tones. I could play pedals on the fourth day, but only to C in the staff.
Today, I can play pedals and notes up a D in the staff. I can play a loud, top of the staff F, but not soft. After playing an easy beginner’s page, my lips feel fatigued. I have never experienced anything like this. I will rest again today and try tomorrow.
Has anyone else ever experienced anything like this? What do you think I have done to cause this?