Ribbit. Ribbit.

Jimmy Wimbelton listened a first week in June.
Ditches along prairie roads of Northern Illinois
Filled the arch of night with young bullfrog songs.
Infinite mathematical metronomic croaks rose and spoke,
Rose and sang, rose in a choir of puzzles.
They made his head ache with riddles of music.
They rested his head with beaten cadence.
Jimmy Wimbledon listened.

Young Bullfrogs by Carl Sandburg

CROAK.