"Murillo's Lesson (2)", also known as "Marilla's Lesson", "Morella's Lesson" or "Morelli's Lesson" is an American march, hymn tune and air in C Major or G Major (Nixon, Robinson). The parts are played AA'BB'. The B part has 10 measures. The melody can be found in a number of early 19th century American instrumental tutors, where it seems to have been a staple of the fife repertoire and in period march collections. It appears as early as the Thomas Nixon fife manuscript (as "Morelli's Lesson"), dated c. 1776-78, although it may have been entered at a later date, as no other 18th century ms. appearances of the tune have been found. It can also be found adapted for use in shape-note hymnals, where the indicated tune was "Morelli," or "Lesson by Morelli". It can be found in the 1844 Sacred Harp and the 1848 Sacred Melodeon. It was printed in Howe's Complete Preceptor for the Accordeon (1843), Elias Howe's First Part of the Musician's Companion (1842) and A. Robinson Jr.'s Massachusetts collection of martial musick: containing a plain, easy and concise introduction to the grounds of martial musick (1820).