Cinematic trailers are time-consuming and expensive to produce. The ones used for my novels are intended to entertain and draw one's attention to what to look forward to in the novel. Serious attention goes to the artists who make them. As an artist myself, I follow all the rules to avoid copyright disputes.
Unfortunately, it is a sad day in the 11:34 world. A copyright dispute was filed against me, claiming that the music used in most of the Cataclysm cinematic trailer was used without permission. Let it be known that I properly purchased a license through an aggregator used by the creator. Despite clear evidence that I had a license to use their work, they continued to pursue the copyright claim.
Because this is a serious accusation, I reached out to the aggregator. After some back-and-forth, they determined they had a record of the transaction and that I had a legal claim to use the music for the intended purpose.
I understand the need to protect your work, but I provided evidence that I was supporting them and that I had proof of purchase (invoice/receipt). For whatever reason, they felt compelled to continue the dispute, which made no sense by this point.
I have to be honest. It was too little, too late. The artist I attempted to support had put a bad taste in my mouth, and I had zero desire to support them. The aggregate refunded me for the license and revoked the license. The Cataclysm cinematic trailer has been removed until further notice. I will reproduce another sometime down the road, using an artist who is appreciative of the support and accepting of the rules/laws surrounding copyright.