I just did the same thing. I made a promo video for an art project which is a youtube short that is 60 seconds long. I wanted both the opening of the song, where things start slow and pick up, and the ending of the song where things build to a crescendo and then nicely close, so I had to find some place in the middle to blend the two cuts of the track together. I just tried this tool and it appears to work well. I have not A/B tested it against my manual cut yet, but I might swap out my cut for this one. Nice!