For Chasing Swells I went through hours of music stock libraries and free music exchanges online until I came across an artist name Cullah that I absolutely loved! His mix of genres and styles made choosing which piece to use difficult, but I knew he was my guy. After I downloaded most of his albums and made a donation I contacted him through his website to get clear permission for use in my trailer. The donation was not required or even asked for, but I believe in supporting artists, especially ones I want to continue to pump out great stuff.
Cullah was great. He, like many other artists out there, give away their art under a Creative Commons license for use in commercials and videos. (He does welcome donations though and he's so worth it.) I would caution that you should always try to get a direct approval from the artist too though. It was a win win for us both, since he posts videos in which his songs are used on his website and that draws a wider audience to know about my book. An audience that may not even know book trailers are a thing.
After the song was laid in I wrote a short script of what I wanted, then hunted through hours of stock footage, both paid and free. If you don’t have the ability to edit your own trailers there are quite a few resources out there who offer for a reasonable price. I have also have been paid to put together trailers for other authors, so if you like my style, contact me. I'll give you a quote and my ideas on your project. It’s an investment in your marketing and your brand, which is invaluable to the business side of things.
Give my trailer a watch and tell me what you think. Likes welcomed!