Ahaaaa !!!!  First comment - nope - it sounds like nothing I have actually heard or can "lock in to" - it comes across as "pre-classical with a Celtic influence"  LOLOL - at a faster tempo it could have been pipe ( as in pipe band / bagpipe ) music (...hmmm possibly - but absolutely do not quote me on that ) - but it (to me) has a definite Celtic feel

Long story short - sounds good - and I can;t directly relate it to anything specific that I have heard !

And trust me, I know the feeling - I'm NOWHERE close to composing "complete tunes" - but I often come up with phrases, licks and chord sequences ( on guitar ) that "sound new to me" - and I ALWAYS question myself "where did that come from - have I heard it before"  - so I know exactly why you ask the question...