The anti-piracy organisation launched in March last year with the aim to fight illegal downloads as digital formats become increasingly popular.
A number of stars voiced why music matters to them during their appearance at last week's Children in Need Rocks Manchester concert.
"It's so therapeutic for me, music," explained Barlow. "When times aren't good and you're having a bad day, I always turn to music.
"Not particularly to make music, but sometimes to listen to music. So it's always been the backdrop of my life."
Buble added: "I couldn't live without it. It's been the soundtrack to my life ever since I was a little kid and could remember.
"It's been the thing I've been most passionate about and it's fed my soul. It's kept me inspired and made me feel like I have the potential to do anything."
Other artists to explain why music matters to them at the event included Rizzle Kicks, Labrinth and Ms Dynamite.
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Watch artists talk about why music matters to them at last week's Children in Need Rocks below: