Thanks a lot man , im glad you enjoyed it. To answer your question, It was a paid drum kit but i got it for free. But as far a mixing , you'll have to mix any kick from any drum kit to match with your track. With that kick , i raised the low end bass a lil high and left the punch to give it a harder hit. So whether its free or not , you'll still sometimes have to mix it to fit it in your track .