Hi, I've got 5 years in the game... currently working for a successful internet marketing agency in the Toronto area. I'm new to this site, so I'll go in at a dollar a minute just to give it a good test! I'll probably raise my rate if I start taking a lot of calls. Here's my spiel... :) Content marketing has quickly emerged as a highly-effective long-term inbound marketing strategy. Compelling content not only persuades prospects, it also gives search engines a reason to send relevant traffic to you. I can show you how to build an end-to-end content marketing plan that will earn you organic links in perpetuity — boosting your SEO. Let's talk! -Steve
I think the reason they're hesitant is because they're not sure if they can really compete with Spotify, Rdio, Google Music and YouTube!
Even if someone is able to stream one song they couldn't find anywhere else, 5000k artists isn't going to satisfy them for long.
Go in at 12 months if you think it's worth it, but don't do month to month on this. Personally, I would punch a sales person at my company if they sold this client SEO.