Hey guys, i've been having my fun dabbling into the very very basics of music production and I found myself hitting a block on my first tune I started out. I never quite sat down and figured out how tempo works when trying to write your own tracks. I've looked it up but I can't find any worthwhile information about what i'm going for here.

Here's the run down:

I hum my tune, I'm on beat, the 4x4 is easy for me because I'm a (self-unclassicaly trained pianist). I go by ear a lot, boom wrote my first loop. Ready to drops some kicks in the second loop annnnnnd what the hell oh shit i'm actually only at 7 bars?

So then I get into this awkward limbo...my track sounds good at 130bpm but the loop ends on a 7 bar... if I speed up the tempo then I have to lengthen the notes but how do I know at what tempo my scaled up into 8 bar needs to be so that it sounds the same as it did on 7 bars during 130bpm.

And that's where my brain has a meltdown. I'm such a by ear kind of guy that I never oversaw this happening. You guys have any tips, guides and or go to's you could give a noob so I can read up and learn how to well...figure out my actual tempo?

I think what i'm realizing is that I'm so sure I wrote the beat as a perfect 4x4 but in reality I must have cut short some notes. And that just by stretching some of them by perhaps a half of quarter of a beat collectively i'll end up getting that 8 bar without jeopardizing the initial beat I had in my head

there's something wrong with ur chord progression then, because a chord progression should 'work' indepedently of the BPM. its not like samples where if you change the BPM, they change in respect to the pace of the track lol.

I'm sorry i'm not sure I understood properly the way you phrased it but I had shared the clip with someone more knowledgable of production and it turns out I just wrote a 3/4 measure so it just never was going to go in 8 bars