A short video but I found it interesting how the composer starts by creating a 4 bar loop in his DAW, adds one chord per bar (Dm, C, Gm, Am), then while the loop is still playing quickly adds accompaniment. This seems like a good idea for quickly generating ideas. What I would do after what the composer has done, is go back and pull apart the added accompaniment so it eventually builds up to the point where all the accompaniment is playing. I’d try mixing and matching the accompaniment, perhaps repeat the whole process to create a B section then put everything together for a complete composition
Here’s how the composition from the video below sounds when pulled apart a little bit and rendered using Virtual Playing Orchestra (plus some taiko drums)
And here’s the video where Wangching Vamnokhu shows how he quickly composed it.