Artist: Spectrum (スペクトラム) Album:Second Navigation / Spectrum 4 Release: 1981 (Japan) (original CD and LP issue) • reissued on CD in 1991 by Victor Entertainment (VICL-23025) Genre: Jazz / Funk / Brass Rock / Pop-Inflected Fusion Label: Victor Entertainment / SJX-30077 (Japan LP) • Victor Entertainment / VICL-23025 (Japan CD) Format: LP / CD Structural Notes:Second Navigation (Spectrum 4) is the fourth studio album by Japanese brass-rock fusion ensemble Spectrum, blending horn-centered jazz and funk textures with pop-oriented arrangements and vocal elements. Released toward the end of the band’s original active period, the record features tracks such as “Night Night Knight,” “Summertime Story,” “Paradise,” and “Never Can Say Good-by,” which balance upbeat, horn-driven grooves with smoother, melodic balladry. Unlike the tighter fusion focus of earlier entries, this album carries a slightly more eclectic and pop-sensibility approach, likely reflecting the band members’ individual songwriting contributions selected from a large pool of material. The overall tone spans from dance-ready brass funk to introspective moments, showcasing Spectrum’s versatility in navigating between instrumental prowess and accessible composition within late-’70s/early-’80s Japanese jazz-pop fusion traditions.