Can you sync music from your computer to an iPhone?

I have an android. I have over 1, 000 songs on my android. I used an app to download all of my songs and I copied and pasted them to my Laptop just incase i lose my phone, memory card, etc. My question is can you do the same for an IPhone? Do you have to pay for itunes? Can I copy and paste the music from my laptop to an iPhone? Thinking about getting an iPhone, not sure if I want one if I can't have all of my music.

Via iTunes.

Download iTunes > Add music > Connect your iPhone > Click in iTunes on your iPhone > Tab music > Check music you want > Sync.

It is very easy to transfer songs from pc to your iPhone or from iphone to pc. ITunes is free, but the music in iTunes are not free. If you do not like iTunes, you can use other freeware to do this job, like Syncios. It can help you transfer stuff between pc and iPhone freely.

You can learn more about Syncios from: http://www.syncios.com/

Add the music file to iTunes library and then sync. Easy.