"All I Need Is You" is a single by Australian singer Guy Sebastian. "All I Need Is You" is the second single from the album Just as I Am, following "Angels Brought Me Here". "All I Need Is You" reached number one on the ARIA Singles Chart and was accredited Platinum in Australia, and reached number five in New Zealand. The song also peaked at number two in Malaysia. As a B-side for this single, Sebastian recorded his own modern arrangement of "Climb Ev'ry Mountain" from The Sound of Music, a song which he had performed on Australian Idol when he was competing in the series.