Bard song levels vs. Instrument training levels?

[Ninjerk]

I see that there is at least 1 stringed instrument song I can buy whose required level is 2, but I can't train stringed instruments until 8. Does this mean I can't use it at all until level 8, or that I can use it but I can't improve that skill until level 8? HALP [You must be logged in to view images. Log in or Register.]