Auditioning all music offered on this portal is always FREE and is accessed by selecting one of four Song Categories and then the Song Title. The "Buy Now" button will take you to a page where you can select License options with corresponding pricing. You may also order custom music production incorporating MONSTROUS 999 BASS THUMPER proprietary technology, as well as other proprietary models. Unlike traditional music sites, here at freeinstrumentals.com we have made stems available for all our products. These HQ separate wave tracks are required for artists wishing to compile their own digital radio quality works. For any questions concerning the offerings available, please use the contact form, where your questions will be answered promptly.