I'm a singer working on fiverr. I just reached level 1 status and I'm happy to offer my services to people. More and more though, buyers are asking to credit/feature me on their song. First few times it happened I was happy to oblige and give them my artist name, but other times... I honestly don't want to be featured on their song. Some of the songs are just not very good...

I'm really not sure how to approach saying no in these situations. Obviously I don't want to offend the buyer, and I want to have repeat customers, but I also don't want to slap my name on every single song I sing. I've thought about adding something to my FAQs or gig description that stipulates I will not agree to be featured on any songs, but I don't want to appear arrogant and standoffish either. Nor do I want to preemptively say no to opportunities I'd be happy to be featured on. I'm just unsure what the best approach would be here.