I'm aiming to validate a Royalty Free Music SaaS Idea. Any tips?

Hi guys,

Where are the best routes for me to validate the following idea, and how many people is the right amount of people to shape the right product if people want it?

I recently launched Melobleep - a music ecommerce store to get intros and full music tracks for music marketing.

I've been talking to a couple of people in the last few weeks and thought of actually building a SaaS product where I host my royalty free music, sound effects and other music assets available for people to do what they want with, for a low monthly fee.

Apart from Artlist.io, nearly all other companies have a complicated licensing model. My idea is for music to be instantly accessible and usable without fear of copyright strikes etc.

Niche/Differentiation: I might lock off the amount of people who can signup to reduce saturation of track usage,
Or maybe I'll take tracks off once they've been downloaded a certain amount of times by the community.

Target audience: brand consultants, video/animators/motion design agencies, youtube and video marketing creators.

Any support will be massively appreciated! In exchange I will provide value wherever I can to your projects, especially when it comes to brand audio.

Thanks again!