There is an old expression that if you give a man a fish he can eat for a day, but if you teach a man to fish he’ll feed himself for a lifetime. The same is true with music. If you give a man a piece of sheet music he’ll learn one song, but if you teach him a chord progression he can write his own songs.
That happened on my last visit to the Ukulele Club of Santa Cruz when I taught the Indie Songwriter Chord Progression of I-V-vi-IV to club co-founder Peter Thomas.