Given the success of his 20-year career in house music, you'd forgive Glenn Underground for the odd bout of self-indulgence. There's certainly the odd moment of jazz navel-gazing on Forgotten Art - his 13th full-length - but it's rather in keeping with the album's eclectic, soft-focus approach. The overall impression given is one of a veteran producer letting his hair down. Forgotten Art is packed full of slick, melody-driven deep house inspired by GU's early inspirations, from jazz-funk, boogie and disco to soul, samba and bossa. As a complete work, the results are impressive, with a high standard of musicality and emotional resonance taking precedence over cheap dancefloor thrills. The heads will love it.