I'm a singer and a programmer, and I've always wanted an easy way to practise harmony parts on my own. So I built Stackapella. You pick a song, learn your part with a guide voice, then record it. Then you add the next part while hearing the ones you've already sung, until you've got the whole choir. Your notes light up as you sing, so you can see when you're on the note. It runs in the browser, there's nothing to install, and all the courses are free. It's also open source. Would love to hear what you think, especially if you sing in a choir or an a cappella group. https://stackapella.com   submitted by   /u/hillel369 [link]   [comments]