I can't find my music! :(

Hello,

So today I tried to download some music onto my iPhone 5 from iTunes, but when i checked my phone, all of my music (apart from the music I have purchased) was all deleted. I checked again on itunes and tried to re-download ALL of my music but it kept saying that it's still on my phone. I've checked and none of my music can be found on there, even though the information iTunes is giving tells me that it is.

I'm not sure where my music is or how to get it back. Help would be much appreciated 😝 thanks!

(I'm not sure if this is relevent but I don't have the new IOS update yet...I think I have IOS 8.2 or something)