You can start off by telling about why your startup failed?
My startup failed because our team (who worked in the music industry, but were not musicians) assumed we knew our audience (who were musicians) and made our development decisions based off that assumption. If we put a "minimal viable product" out to our audience sooner we would have been able to pivot heavily and possibly create a product they would want to use. Also never work in the music space! Ever!! :)
If people do pay for music, it is predominantly streaming servies where they get all the music they want and pay one company.
Don't get me wrong, there will be startups that thrive in the music industry in the years to come, but they won't be selling music. They will be the companies that begin to think way outside the box and revolutionize the commerce in the space (however that may be).