I agree with everything Mr H says, but I thought I would add my two penneth as a life long Jazz Rock and Fusion fan.
Sadly the recent review in Classic Rock incorrectly assumed that Derek was now finally able to attract big name guitarists via his new found fame with Black Country Communion. Well clearly they hadn't bothered to check out his previous albums featuring such guitar luminaries as Allan Holdsworth, Al Di Meola, Yngwie, Zakk Wylde, et al! Also the review likened this to Blow By Blow era Beck, but if anything it is more akin to the There and Back period of the maestro's work.
Steve Stevens, famous for his Top Gun guitar epic, turns in another sublimely melodic performance on the title track Oceanan and I too am pleasantly surprised by Joe Bonamassa's Beck'esque stylings.
The reason I think this is Derek's best album to date is consistency and restraint. Whilst restraint isn't a word often associated with fusion, here Derek steers clear of the histrionic overplaying of some of his previous guitar compadres (take note Zakk) and delivers a consistently listenable set of tunes with each guitarist turning in sympathetic and stirring performances. The Classic Rock review also, incorrectly, suggested that Derek sounded like a guest on his own album at times, but this misses the key point that he is the songwriter and as such does not have to contribute overbearing solos in each track.
I heartily recommend this album to existing Derek fans, and also to those newcomers to his music who have a penchant for classic fusion. To my mind Derek is the natural inheritor of Jan Hamer's crown as the most compatible keyboard player for guitarists, and on this album he pays respectful homage to Jan's pioneering style and that brief period of wonderfully exciting music that existed in the early to mid 70s.