It will take a while to get into the depths of this collection, after just purchasing it earlier today. There are some things I am unaware of when making purchase which will be important to learn more about. One is the “(growing)” part of this collection, I do not understand if this means in the future this product package will be updated and past buyers will receive the updates? Second, I very nearly bought the Percussive Music Pack prior to this, and opted for this as an over-arching package given the bit in description “The collection contains tracks from the following packs made by Audio Alchemist”. However after downloading, I discovered a subtle difference: that is, the 170 tracks in the Premium Music Collection do not include any of the individual instrument layer tracks as seen in the details of Percussive Music Pack. This is a bit disappointing. It does not disrupt the whole grand value of this Premium collection, but leaves me wondering, because I had a vision of experimenting with layering musical tracks live in a game environment with the percussive music content, which is why I put 4 instead of 5 stars. As said, going through all the music and finding uses for it will take some time so I do not know how long and I expect I’ll get massive amounts of value out of it (else I wouldn’t have paid). So just wanted to make a note to be aware of the nuances between this mega pack and a possible impression that it contains all constituent content from the smaller packs. All told, thanks for the awesome premium music, will order more in future.