Can try some of these ideas. https://www.wikihow.com/Watch-Deleted-YouTube-Videos-with-the-Url

I thought his love letter pen pal is coming back though?

ETA can also mean “edited to add” when you update your comment to add more to it

https://en.m.wikipedia.org/wiki/People_Power_Revolution

https://en.m.wikipedia.org/wiki/Singing_Revolution

Cool project! Will it explain some of the related concepts like envelopes and ADSR? It might be nice to talk a bit about calibration/microtuning so it can match external gear. Also maybe some recipes for making sure a readers synth they build has a few basics to work from.

Is the synth going to support the other scales? C is great but you’re gonna want the black keys.

In terms of things that make you stand out: paying attention to the UI/UX of the interface. How do people use it? What do you like about the other interfaces they have?

Another feature is support for drivers. Something Linux and windows have less adoption/support compared with Macs. Obviously it’d be nice if your synth could take in sound from controllers and output to other gear. Or have your sequencer drive a midi clock for other devices.

Another direction is to look at what parts of audio you find interesting. Maybe it’s low latency fax processing, maybe it’s elaborate acoustic modeling or reverb, or control of harmonics. All those are good ways to stand out and specialize. Or tools to help analyze and visualize audio.

Look at some of the existing VST ecosystem and you might get inspired!