Complex sentence: The Spiral Starecase from Sacramento, California, was a popular 1960s music group, recognizable for its horns and leader singer Pat Upton's distinctive voice, but probably best known for their lone hit "More Today Than Yesterday" released in January 1969.
Split into simpler sentences: The Spiral Starecase from Sacramento, California, was a popular 1960s music group, recognizable for its horns and lead singer Pat Upton's distinctive voice. The band is perhaps best known for their lone hit "More Today Than Yesterday", released in January 1969.