I wrote a song that could be classified as Pop or Country that starts out at a medium slow tempo in the first two verses and bridge.
Then there is a section after the bridge that can best be described as an extended third verse followed by an outro that repeats the opening chord progression a few times before the song ends.
The intensity increases during this third verse and I can increase the volume on the instrumentation to convey an elevation of the intensity. But I would also like to increase the tempo from medium slow to medium. Not a doubling or even a big increase, but a noticeable increase in tempo - before slowing back to the original tempo on the outro.
Is changing tempo during the song and back again a common device used on modern popular music? Or is there a good reason to avoid this type thing?
Does it pose any particular problems for either the listener or the musicians who must play the song?
Assuming the negatives aren't prohibitive - are there certain guidelines that should be adhered to in an effort to make this type change more effective or less disruptive (ie. try to use a multiple of 2 on your Bpm)?