Not much of a pros and cons list but this was my experience, maybe you can pull something out of it. I've had some small success, reaching out to influencers. Mind you at this point I've never ran a campaign before (if i could even call this one lol) so i was really just throwing darts in the dark lol. I have a song called One Day that has heavy funk vibes on it so i thought it would be perfect for the roller skating niche that was getting popular at the time. I reached out to a bunch of people, maybe 25 micro-influencers. Some I offered to pay for a post others I just shared the music with. After the big push, I didn't notice a direct increase in streams, but a couple of months later a micro-influencer (from a completely different niche) posted a video with my song and added it to their playlist. From there plays shot up and I was added to a bunch of other playlists. That was mid-2021 and i just past 10k on both apple music and Spotify at the end of 2022. since that initial push, I haven't marketed that song in the same capacity so a lot of those were passive streams. I know 20k total isn't a crazy amount but i was getting less than 100 plays per song before this.