Don Shinn’s Departures, first issued in 1969 and recorded at Lansdowne Studios in London just months after his acclaimed debut, returns in a newly remastered edition that highlights the record’s adventurous spirit and Shinn’s singular command of the Hammond organ. Where his debut established him as a rising force, Departures reveals a more overtly jazzy, exploratory side — muscular, unpredictable and deeply musical — that helped influence a generation of keyboardists, including the young Keith E…