who sang the song best friends?

to find out I looked at the end credits and had to use the zoom feature because they were so small! It's by Penfifteen Club

And from their site thepenfifteenclub.com: "In other TPC news... You can hear The Big One Five in the new Wayans Brothers film "Little Man". We are doing a cover of "Best Friend". We went to the premier this week and checked it for ourselves."