Without Arthur’s voice, I never would have enjoyed that success.

The line reads as an explicit acknowledgment of artistic interdependence: Simon attributes a measure of his own “success” to the distinctive contribution of “Arthur’s voice,” implying that achievement in popular music is rarely solitary. Beyond gratitude, it suggests that a collaborator’s timbre, persona, or interpretive presence can be constitutive of a songwriter’s public impact—turning compositions into culturally resonant recordings. The phrasing also carries a counterfactual humility (“never would have”), emphasizing contingency: fame is presented not as inevitable talent rewarded, but as the product of particular partnerships and the chemistry of specific voices.