A to Z Challenge – Letter P

The letter P is good for speculative fiction. So many words to choose from. I decided on two words: PENTAGRAM for fantasy and PLANET for sci-fi.

Here is my cover for PENTAGRAM.

I wonder why a pentagram has always been considered magical?

This one is for PLANET.  

Alien music must be different from our own. Do you know any composer whose music sounds alien to you?