How to sync iphone with new computer?

My old laptop crashed and I can't reboot it. I'm planning on getting a new laptop, and I don't know how to sync my phone with it without losing all my things on my phone already, is there a way i can just sync it with my new computer without having to transfer anything? Can I just do it without having to transfer music/contacts and stuff? Will it stay the same? I need all the help I can get so I don't lose any of my music.icloud should keep my contacts but as for music goes i don't purchase my music so its not saved in any library, I usually download it off youtube or cd's or something. I just don't wanna lose my music… Thats all.someone help me to know how to set up my iphone on my new laptop, and if possible with out having to transfer all my old stuff like i said i can't anyways, the old laptop is completely crashed.

Use iPhone transfer platinum application.

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