Okay, TBTL:
I'm new to Sanatana Dharma, but not the chakra system. I've believed that many years.(though in no way am I an expert) You can Google this to to verify that I'm remotely accurate, but each chakra I believe vibrates to a certain note, so like, CDEFGAB, etc, but then there are the seed sounds (bija? I think)

the seed sound I believe is this
CHAKRA: SEED SOUND
Root: LAM
Sacral:VAM
Solar Plexus:RAM
Heart: YAM
Throat: HAM
Brow/Third Eye:OM
Crown: None I believe

Now this is just me, but I do in fact try to do a yoga pose for each of the chakras, and repeat each seed sound correspondingly. My understanding is that the seed sounds also then help to open their respective chakras.

Others can probably expand on this better, and I guarantee there are excellently thorough bits of information lurking about the internet! Like search terms seed sounds of the chakras or something to that effect. I have info somewhere in a few of my chakra books too, but I happen to know the sounds from practice.