Since 2016 I've been touting the music mixes my son complied for me and which I listen to when writing the Michael Grant novels. As I have acknowledged how I enjoy the music as background sound as I write, readers and blog visitors have asked, "How can I get that music?".
There is definitely a musical ebb and flow to the music (mostly instrumental) that lets the creative mind run free... at least for me. You'll need to listen to find out if it is your cup of tea.
If you go to the Author tab and scroll down to the second section (BLACK BOOK MIXES) you can click on the arrow to listen to each volume (which are about an hour in length) or you can download them for free. Here is a quick link to the Author tab.