The secret of getting ahead is getting started.
Without hard work, nothing grows but weeds.
Expect problems and eat them for breakfast.
Begin to be now what you will be hereafter.
Only the educated are free.
Leap, and the net will appear.
Never complain and never explain.
Go for it now. The future is promised to no one.
Things do not happen. Things are made to happen.
Well done is better than well said.
To summarize, the particular song a male sings, and the behavioral responses of females to song and morphological signals, are not genetically inherited in a fixed manner but are determined by learning early in life.