How to transfer music from a computer to an iPhone without iTunes

It is no doubt that there are many music service platforms and one of them is the music streaming giant iTunes. But think about the time when the user will not have a stable internet connection, this is when the users get to start thinking about how to stream music. Sure one might they can simply add tracks to their iDevice by integrating it to a PC or a MAC through iTunes but thinking about it, it is far from convenient. But today that is exactly what we are going to explore and discover how to transfer music from a computer to an iPhone without actually using iTunes.