Initial thoughts on Trader music, and A19 music in general (I know, a little late to the party)
While I like having new music, the style doesn't feel right. Mainly the electric guitar sound used in a lot of the clips. I think the reason I feel this way is because somewhere in my brain, it isn't making sense that electric instruments would be common in the apocalypse.
My feedback (for A20) is to try some iterations using a fully acoustic set. Traditional guitars, cigar box guitars, banjoes, harmonicas, pianos, flutes/whistles stuff like that. A severely de-tuned honky-tonk piano would be great to use in suspense music. Basically, instruments that would be common in a bluegrass/country setting. Not a country style of music, but those kinds of instruments with a modern post-apocalyptic flair. Kinda like how people are playing modern heavy metal music using only orchestral instruments. Do modern post-apocalyptic music, but try doing it with a strictly acoustic set of instruments that one might imagine they could craft in the apocalypse. Maybe even keep the electric guitar, but record it without an amplifier - put a mic by it and record the sound of the strings without plugging the guitar into anything.
In A18, the music did work for me... With A19, some (but not all) of the music just feels out of place.