"How to improve melody... I get this question a lot. I think people kind of make something too complicated out of that. There's a lot of rules. You can [read] books about the melodies... But [if] you have great songs all around; if you have a nice chord progression, you can just follow [it] and play the notes of the chords, and it's gonna work. Then, sometimes, you deviate and come back, but you don't need to think much about it. [...] You can also just pay attention to melodies... and play melodies. Get the guitar, and play melodies. I think guitar players, in general, at least from my generation, learn scales, the pentatonics, the shapes of the modes, the triads, this and that, and we don't play a lot of melodies. So that's something that I was paying more attention to later [in my career]... I just try to play the melody. No fancy arpeggios, no nothing. Just a singable melody."
January 1, 1970
https://en.wikiquote.org/wiki/Kiko_Loureiro