I think this is a classic nature vs nuture discussion…
I personally believe more in the nuture argument.
my belief is simply:
we are born a blank canvas, but our mind is very mallable, and immediatly starts forming paths - by our environment.
so when we start to intentionally ‘learn’ things, we are not blank anymore … and some things come a little easier (e.g music?) and some harder (maths?) … and its different for us all.
but what then happens is reinforcement…
things we find easier, we perhaps enjoy more, due to ‘success’, so we do more (practice!), so get better.
at some point we hit a plateau… but I think, if you enjoyed ‘success’ early, you’re more likely to push on.
of course, there are lots of other factors…
a good teacher, your peers, or family might help motivate you more
(e.g. your parents being into music, are likey to encourage you more?)
also environmental factors… e.g. practicising facilities at school/home.
as you get older of course, your mind is not as malleable any more, so it gets harder…
but you have the benefit of learning experience (e.g. you know the way you learn best)
so yeah… no natural talent, just many factors that might give a head start on that practice curve…
but talent is earned 
also what is ‘musical talent’?
Im not sure someone who can play (eg.) a violin is necessarily going to have a huge headstart in ‘making beats’, nor vice versa. except perhap technical skills (music theory), which is kind of not what we are referring to i think as ‘talent’… would they have ‘an ear’ for it… if they only listened to classical music?