Robert Plant selected this as the subject for the first episode of the Digging Deep
podcast series he released simultaneously with his album Digging Deep: Subterranea
in 2020. He did so because the song was important to his personal and artistic evolution.
Plant felt like the creation of this song was the first time he truly broke away from his past with Led Zeppelin and fully opened himself up to a new stage of creative freedom. He was glad to do so because he was ready to break loose from the artist he'd been. "By the time it got to 1993," he says in Digging Deep
, "I was determined to grow up a little bit, to finally shed all the last remnants of 'The Lemon Song
So, in his desire to grow and mature, Plant wanted to create a song that said something of social and philosophical significance. He thought specifically back to '60s bands who were trying to say something important with their music, noting Moby Grape, Jefferson Airplane, Quicksilver Messenger Service, Traffic, and Tim Hardin.
The song he came up with in this effort, "Calling To You," is about greed and human destructiveness. This is according to Plant himself, though it's not entirely easy to discern it from the lyrics. It's not clear what is "calling to you" in the chorus, though we can presume from Plant's statements that it's the incessant human need to conquer new horizons and gain new things - something many characterize as greed.