i'm tryna make some songs here, or at least write songs to develop in the future, and i was just wondering, when there are multiple, varying in similarity, tunes/melodies/chord progressions available to work with that i'd like to incorporate at some point into my music, how does one figure out whether to attempt to cram them in the same song or save them for another song, all while keeping in mind if i don't use that cramming technique i would have to come up with a likely less musically satisfying melody to fill the gap and complete the song, while also keeping in mind that if i do cram, the song MAY possibly sound better given the incorporation of multiple flagship tunes, but then might not make as much sense or sound AS natural given that they tend to be completely, or at least enough that it's noticeable, different. how do i figure out the correct balance?
generally, i'd say don't obligatorily include things into a song just because you have them on hand. in my opinion, working on a song is like being a doctor, and the song is the patient. examine the patient, listen to the patient, and find what that patient needs. don't just go into your doctors closet and get the bone saw just because you have a bone saw