In Gerald McBoing Boing's Symphony Gerald is still working for the 'Bong! Bong! Bong! radio show as the sound effects department. The head of the station is in a frenzy because it is almost time for the symphony program to begin and none of the orchestra members are at the station yet.

As Gerald walks past the owner he gets a brain storm, Gerald can do all the parts of the orchestra!   Or can he?   The owner isn't sure Gerald has the strengh, so he summons the doctors; Turnpike, Heartburn, Von Moose, Von Bushwacker, Crankshaft, and old Dr. Suess to check him out.   He passes the physical so Gerald goes on the air.

Gerald gets the symphony score and his radio script mixed and sound effects get intertwined with the music and the owner is so mad he tosses Gerald out.   But when the telegrams come and his performace is praised by all the experts Gerald is given a raise by the station owner.   But all this didn't go to Gerald's head, he didn't boast, like most, cause he dosen't speak words, he goes 'Boing! Boing! instead.