Noticed yesterday that playing Wagner (specifically the Die Walkure suite) consumes the battery of my Apple Macbook much more rapidly than playing Beethoven (specifically the 6th).

Both these mp3’s are the same bit rate, same compression, and nothing changed on the laptop between playing the two suites. I played the suites for the same length of time twice and did not even move the laptop thinking that perhaps the temperature might be a factor.

Next step is to run different suites of both composers and see if the effect can be reproduced.