Tuning

Guitar Annoyances.
During the Lenten Service

Playing the Prelude with your High E (which is tuned to a D) being out of tune
Playing the Postlude with your Low E (which is tuned to a D) being out of tune

Composing most of your music in alternative tunings so playing your original compositions as Prelude and Postlude which are in different tuning than the other songs you are playing and having to re-tune guitar without disrupting the service. Especially from (DGCGCD) to standard.