What makes Once Upon a Time by The Lettermen notable?

This album helped establish The Lettermen as a staple in the pop genre, leading to a string of hits throughout the 1960s. It was well-received for its lush arrangements and heartfelt performances, contributing to the rise of vocal harmony groups during this era. Released in 1962, 'Once Upon a Time' is The Lettermen's debut album, introducing their smooth vocal harmonies to the music scene. At this point, they were beginning to carve out their niche in the pop music landscape, following a series of successful singles that showcased their unique blend of traditional pop and contemporary influences.