Type music in clickbank marketplace search, there are lots of software products and books that you can put up links or banners for. Good luck.
CB has some beat makers and music production software. Those beat makers...actually a VERY GOOD niche with some very good keywords. --> cbengine.com is your friend!!
I actually disagree, I've reviewed a lot of the music software and does it do its job as a sequencer? Yes. Does it allow you to include your own sounds? Yes. But can you expect updates and will that software ever actually help you learn other professional music based software? No. My opinion is this, take it or leave it - if you are planning on making music for yourself and never doing anything with it, then get this software. If you however are actually looking to get it mastered or engineered, this software does not support formats which can convert into protools, cubase or any other leading software - which in essence you'd have to get those programs and build the song all over again. Just FYI
There are lots of related products for your website. Search the marketplace, and choose a few with good stats. Test... test more... fine tune... make money! Good Luck!