A HUGE NO NO THAT YOU WILL BURN IN HELL FOR WRITING.
Parallel fifths refer to consecutive interval
s occuring consecutively in a horizontal manner.
This means, I have an interval of a fifth in quarter note
s on beat one, and then, even though I change pitch on each voice, on beat two they are still a fifth apart. This destroys the sonic and audible tension which makes music
interesting. It also degrades counterpoint
and melodic invention
, and overall goodness of whatever it is you are setting to staff paper
This doesn't just apply to fifths, either. It also applies to octave
s and of course, unisons. Parallel occurences of other intervals isn't nearly as frowned upon as fifths or octaves, but you should try to keep it to a minimum if you can.
So, when you are composing that love song for your girlfriend she won't know the difference
, but if you are turning this in to me, don't front or I'll have you killed.