BeatMaker includes its own Sound Store, a very convenient way to add high-quality sonic content ready to used in your projects, such as drums kits, instruments and synthesizers. To open the Sound Store, tap the following icon at the top of the Browser:
You can browse sound packs by Genre and Instruments. Some of this additional content is free, while other is available as in-app purchases. Once you select a sound pack (and possibly purchase it with your iTunes Store account), it will be downloaded and installed within the BeatMaker app, ready to be used in your sessions.