In an etude I'm playing on tuba, there's either a passage or a portion of a measure marked "lebile." I can't tell which it is due to the fact that it's marked at the end of the last measure in a line. No clue what it means or to what exact portion of the music it pertains. If anyone happens to have the book of Rubank Selected Studies for Baritone on them, it is C Major. Somebody help me! Thanks y'all.