Thanks Justincase - you're not the first person to ask for this!
Good news, we've just uploaded a new Concert Pack into the Beta - if you're on the Beta you can get early access, otherwise it should be out for everyone in a week or so.
To get access to the Beta program - which will give you early access to features and sound packs, you just have to go to your account (
account.serato.com) and toggle the switch on in the Serato Product Betas block (note that you need an active subscription to join the Beta). That will give you a download link and then the packs can be found on a thread in the Beta group.