Music is a source of power in my daily life.
The origin is the origin, but it also refers to the ground springs, where the origin of water comes from.
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You did not learn this reading, so here's a mnemonic to help you to remember: Think of how this ground spring is everyone's (皆) origin (元). Everyone can use it, it's the 皆元!