If "Mr Validity" is a specific artist you follow on a platform like , Bandcamp , or YouTube , please provide a few more details (like the genre or a link) so I can create a proper feature for you.
However, "Rosemary" is a popular song title for several other artists: Rosemary – Mr Validity
Could you double-check the or the platform where you heard the song? WillyRodriguezWasTaken – rosemary Lyrics - Genius If "Mr Validity" is a specific artist you