1975 Original Still In Shrink. Includes Original Lyric Insert. “Equinox Produced Styx's First Single With A&M, The Highly Spirited "Lorelei," Which Found Its Way To Number 27 On The Charts. Although It Was The Only Song To Chart From Equinox, The Album Itself Is A Benchmark In The Band's Career Since It Includes An Instrumental Nature Reminiscent Of Their Early Progressive Years, Yet Hints Toward A More Commercial-Sounding Future In Its Lyrics. "Light Up" Is A Brilliant Display Of Keyboard Bubbliness, With De Young's Vocals In Full Bloom, While "Lonely Child" And "Suite Madame Blue" Show Tighter Songwriting And A Slight Drift Toward Radio Amicability. Still Harboring Their Synthesizer-Led Dramatics Alongside Dennis De Young's Exaggerated Vocal Approach, The Material On Equinox Was A Firm Precursor Of What Was To Come . After Equinox, Guitarist John Curulewski Parted Ways With The Band, Replaced By Tommy Shaw, Who Debuted On 1976's Crystal Ball Album.” Mike DeGagne, AMG.