Creating short music clips

I have to say, playing around with free online Synthesizers like Online Sequencer is great fun even if you don't know anything about music.
As it's hard to know what you can use in personal videos, I thought it might be better to just try make my own. I'm actually really happy with this one, the tune popped into my head one morning and I'm really hoping it wasn't just a memory and that it's actually mine! lol
I love vintage movies, music and clothing and something this reminded me of that era.
The lovely video clip is by Olga Kobruseva on Pexels.