Bad vibrations!

The molecule has picked up some vibrations
Putting me through trials and tribulations

The hotter it gets the more it jumps
The spectra has many more bumps

P and Q bands look the same
They have changed the rules of this game

I try my best to decipher your bands
I wonder where the Q stands

I need my sleep so help me out
Let me win just this one bout

I would write more, if it were not for the infrared methane spectrum..