Cerebreoredundogram

The common term is "earworm," but I prefer "cerebreoredundogram". It sounds less parasitic. Both words mean the same thing--that song that gets stuck in your head for an extended period of time. Often cerebreoredundogram turns into "humnauseum"--the outward vocalization of said song.
Yesterday morning I had a choral arrangement of the liturgy stuck in my head—the piece was Joyous Light of Glory, Carl Schalk's arrangement of the Phos Hilaron. Being a portion of Evening Prayer, it didn’t quite fit the time of day.
This morning it was Tell out My Soul, an arrangement of the Magnificat by K. Lee Scott. It remained there all day. I suppose getting the liturgy stuck in one's head is not a bad thing. It gives one a chance to ponder Christ, even if the words pop up inadvertently.