How to get a song I downloaded from the internet onto my iPhone?

I got the album Pigeons by MikelWJ but I have no idea on how to get it onto my phone, if I even can.

Play the entire album on itunes & it should appear into your itunes library, from there you connect your iphone to your computer with the usb cable & click 'sync' & it should appear into your iPhones music library.

You can't every thing has to go through itunes sry you shoulda gottan an andriod

Songs that i usually download straight from the internet usually go straight to my iTunes from the download.
I would recommend using the website youtubeinmp3.com and you will probably be able to sync the song onto your phone from there.