Ralph Alessi Quartet It’s Always Now ECM CD   Trumpeter Ralph Alessi brought a passel of originals to his latest recording date, his fourth for ECM, It’s Always Now. Most are single-author compositions, but a few are collaborations with pianist Florian Weber. The two are joined on the recording by double bassist Bänz Oester and drummer Gerry Hemingway. It is a formidable lineup, one responsive to and supportive of each others’ playing.    Coauthored with Weber, “Hypnagogic” opens the album, with whole-tone arpeggiations from Weber and repeating notes from Alessi creating a mysterious atmosphere. Alessi’s lines unfurl into passages morphing