Complex sentence: The band is essentially the continuing project of singer/songwriter Martin Phillipps, who is the group's sole constant member--for a time in the 1990s, the act was billed as Martin Phillipps & The Chills.
Split into simpler sentences: The band is essentially the continuing project of singer/songwriter Martin Phillipps, who is the group's sole constant member. For a time in the 1990s, the act was billed as Martin Phillipps & The Chills.