Ipod Nano

My computer crashed about a month ago. While trying to copy the itune I purchased from Apple to my new laptop, I erased my entire Nano. 225 purchased tunes. Anything I can do? Do they have a record of what I purchased? Can they download the tunes to my new laptop. Getting a human being is almost impossible that speaks English without an accent. The idea of having to redo those tunes. Near impossible. It was done over hours, months of auditioning/listening to tunes. I'm getting sick thinking about it....sos sos thanks in advance, warren