So let’s do it. Let’s make a tuning system out of the harmonics of the C string. First, we should find the C, G, and E whose frequencies are as close to each other as possible. We’ve already got C at 1 Hz. We can bring our G at 3 Hz down an octave by dividing its frequency in half. This gives us a G at 3/2 Hz. We can also bring our E at 5 Hz down two octaves by dividing its frequency in half twice. This gives us an E at 5/4 Hz. When you play 1 Hz, 5/4 Hz and 3/2 Hz at the same time, you get a lovely sound called a C major triad. Cool!
As you may already know, the use of music and lyrics in karaoke is another mechanical use that can be another source of songwriter royalties. Aside from the kick you’ll get out of hearing your friends and total strangers belting out your songs at the local bar, you’ll also earn royalties every time someone sings your song. Licensing your music for use with karaoke could also potentially generate royalty income in a number of different ways including publishing, mechanical, and synchronization rights.