In 1955, her single "My Boy – Flat Top, " reached No. 16 on the "Billboard" charts. A follow-up single, "Baciare Baciare (Kissing Kissing)", peaked at No. 43. In 1956, her single "Seven Days" peaked at No. 17. She recorded other singles and albums in the 1950s, with little chart success. In 1958, for the Coral Records label she released "Picnic: Dorothy Collins Sings Steve Allen", an album of compositions by the musician/TV host/comedian. Collins sang a collection of educational tunes on an album titled "Experiment Songs", one of six LPs in a set called "Ballads for the Age of Science," composed and produced by Hy Zaret and Lou Singer around 1960.