Solo founder at Emysound[1].
Started 10 years ago as an open-source project, building an algorithm for audio fingerprinting. Added a commercial offering, selling storage built specifically for audio fingerprints, targeting enterprise customers. Since the offering was too technical (it's hard to sell solutions to problems that are too narrow and domain-specific), pivoted to more "business-oriented problems". This last year's pivot is a chance to finally grow. Running a business in single-player mode is, at times, too stressful. Aside from the technical part, which I very much enjoy, I need to wear marketing, sales, and customer support hats.
[1] - https://emysound.com [2] - https://github.com/AddictedCS/soundfingerprinting