Complex sentence: Although the Sire sessions came to naught, the group toyed with signing with another label but were put off by the insistence of record executives that they be a disco vocal group, the musical trend of the day.
Split into simpler sentences: Although the Sire sessions came to naught, the group toyed with signing with another label. But they were put off by the insistence of record executives that they be a disco vocal group, the musical trend of the day.