I'm currently trying to compose some dungeon synth song. I like them and most of the time they use (very) simple melodies, so I thought this would be a perfect way to practice and develop my skills.
I find the foreground instrument (flute), and I tried some simple melodies, but it seems I can't just find the perfect background sound.
Based on what I learned from music theory so far, what I hear in songs and "how I feel based on my instincts" I need some low pitched sound (precisely some octaves lower, but in the same scale), bass sound I think which follows in a way the tone of the foreground eather in real time or with a very little delay.
I chose a simple, reverbed, low pitched synth for the background but it's just doesn't fit.
Is there some advice based on music theory that tells what sound can be in balance with a foreground sound? And adding to question, is there a proper way to choose drums for the background?