Artist: Spectrum (スペクトラム) Album:Optical Sunrise / Spectrum 2 Release: 1980 (Japan) Genre: Jazz Fusion / Funk / City Pop / Horn Rock Label: Victor / SJX-20185 (Japan LP) • later CD issues (e.g., VICL-23023) Format: LP / CD Structural Notes:Optical Sunrise / Spectrum 2 is the second studio album by Japanese ensemble Spectrum, released in 1980 and characterized by its vibrant fusion of jazz, funk, horn-driven rock, and elements that sit adjacent to the city pop sound palette of the era. Tracks such as “Motion,” “F・L・Y,” “In The Space,” and “Sunrise” showcase tight brass arrangements, syncopated grooves, and spirited ensemble interplay that define Spectrum’s energetic approach — combining horn sections with rhythmic funk underpinnings and catchy melodic hooks. The album continues the band’s exploration of jazz-informed fusion across concise grooves and sophisticated arrangements, securing its place as a standout in Japan’s late-’70s/early-’80s brass rock and fusion canon.