A tourist riverboat calliope blasted hymn and gospel tunes across New Orleans’ French Quarter on Friday as a tribute to the late jazz pianist and educator Ellis Marsalis.Marsalis, who taught generations of jazz players, including four of his six sons, died Wednesday of pneumonia brought on by COVID-19.On Friday, a medley including “How Great Thou Art” and “I’ll Fly Away” climaxed with “When the Saints Go Marching In” and the “Ode to Joy” from Beethoven’s Ninth Symphony.Most of the city has been