I will tweet your song or brand to my followers who are mostly interested in music, comedy , fashion and football. I get good engagement on relevant stuff. I have been on twitter since 2011 and my account is trustworthy and has good reach and discoverability . In case your service is a song or new brand , I take my time to promote on my other social medias for stuff I am moved by and voluntarily .
Limitations - What the user will and will not tweet about.
Send me your desired tweet for promotion and what you want to achieve