In this column: festivals and events, blues, the Netherlands, Utrecht Blues Festival, Tivoli Vredenburg, Utrecht, Blues Estafette, Meena Cryle & the Chris Fillmore Band, Sean “Mack” McDonald, “Big” Monti Amundson, Richard Earl, Ribs & Blues, Raalte, Leif de Leeuw and Sem Jansen, Jazz in Duketown, Den Bosch, 's Hertogenbosch, Gregory Porter, Jazz Orchestra of the …