Complex sentence: She composed "At the Same Time" for Barbra Streisand and that recording, "Higher Ground", debuted nationally at No.1, giving Callaway her first platinum record.
Split into simpler sentences: She composed "At the Same Time" for Barbra Streisand. The song appeared on Streisand's album, "Higher Ground", which debuted at No.1 and gave Callaway her first platinum record.