one shift
two shift
red shift
blue shift

this wave has a certain tone
this wave has an antinode

some waves add to make another
some waves shorten in the summer

here's a wave that's really fast
this wave has really got to blast

but how to find velocity
find the length and take that lambda
multiplied by frequency

though when the amplitude is maxxed
a level you can't hear perhaps
the noise it makes is just the worst
so please
why dont you turn that down
that awful noise, it really hertz