JB told BBC Newsbeat that the six charity singles they've been involved in so far are "about giving back".
"We'd never be too proud — excuse the pun — or to above our station to feel like we can be involved in something," he continued.
He then clarified: "We're artists. We're singers.We release singles." He continued: "The best way, or the strongest way for us to be involved in something, and that's for us to lend our musicality towards it. So if we can do charity singles for ten, twenty years to come then by all means we will be."
Can they all be as good as 'Proud' please?