I have accumulated some pedals over the years but haven't had sufficient "pedal power" which means, some of them work consistently and others are no a shelf. I finally bought some pedal power. But, it's the one pedal that doesn't even require power that has been sitting on the shelf, the most unused for years. My volume pedal. Tonight I used it to create the swells you hear in the background. I am smitten. I will be having lots of swell like sounds in songs for a while, trust me.