Kate told Q magazine how the song relates to swimming. "I started with the idea of a relationship in deep water and thought I could parallel that with learning to swim, the moment of letting go,'' she said. "When my dad was teaching me to swim he'd hold both my hands, then say, 'Now, let go.' So I would. Then he'd take two paces back and say, 'Right, swim to me,' and I'd be, 'Oo-er, blub, blub, blerb...' But I thought it was such a beautiful image of the father and child, all wrapped up in the idea of really loving someone, but letting them go, because that's a part of real love, don't you think, the letting go?"