A simple program which generates the accompaniment based on a given melody.

Input a

from ostinato import Ostinato

ly = Ostinato("input.ly")
ly.generate_lh()
print ly.output()

• python-ly

mary_had_a_little_lamb = r"""  \relative c'
{

\time 4/4
e d c d
e e e2
d4 d d2
e4 g g2
e4 d c d
e e e e
d d e d
c1
}
"""

show(ostinato(mary_had_a_little_lamb))

The original lilypond file would be:

whilst the updated one would be: