Adding a comma to numbers

Hi all, I have this code I'm using on the main sheet which links to another sheet, but I can't seem to get the numbers to add a comma if it's more than 1,000 etc. Any help would be great. Thanks.

=INDEX(Lives!B2:B110,MATCH(MAX(Lives!C2:C110),Lives!C2:C110,FALSE),)&"Top live show"&MAX(Lives!C2:C110)