Add a server to a SHarePoint 2013 farm: SQL listeners configuration

Hi,

I have created a SP 2013 SP1 farm and I would like to add a 2nd server to this farm.

We used a listener to connect the 1st server of the farm to SQL. How does it work to connect the second server to the farm? Do I need to create a second listener or can I use the same that I used for the same server?

Many thanks,

Fred