Personally I find music by Sunn O))) to be of use, this is also one I used to play each morning before I would have a important court case.
My ex who HATES Sunn actually really likes this track by them & had to agree with me about the "potency" of this track when you are in a "Zen" kinda state (I hate how 99% of people in the west think of the concept around Zen, when you actually tell them what it really is they seem shocked, it is always the same kinda people too with their fucking mama dai type rubbish. They should be forced to commit Seppuku upon the death of their parents of most loved pet imho)