"Back in the day" ... as my kids were growing up, I usually wound up doing about 80-90% of everything ... including most of the parts and the vocals. Occasionally, folks (like yourself) would throw a track or three into the stew, but it was usually confined to my direction. I didn't have time to devote to a band, so I fit music into my quiet hours.
Then I sold my business, and started a band ... having more time.
My how things changed - top to bottom. Whereas I used to steer the boat by myself, I now take artistic direction and creative input from others. I'm playing the keys here, but I'm doing it in the way our guitarist directed me to play. I'm also only singing one background line. The main vocals are the other guys.
Although I'm the guy who does the final mix, I let our guitarist work out the initial arrangements and he sends me the "cleaned and edited" tracks to mix. He corrects all the miscellaneous crap that occurs, aligns the timing etc ... and does a TON of the early engineering of the mix.
By the time I launch into finish polishing what he sends me, I've got about 25% left to do compared to what I used to do. Accordingly, my ear fatigue is next to nil, and I can devote more thought to "ear candy" production flourishes.
... like Jennifer Lawrence doing the voice over at the end. The vamp was good ... but long, and I thought: Let's put a contextual narrative in there to illustrate what the song is essentially saying. So I dl'd a speech she made on the subject and edited it to fit and flow.