On the instrumental album “She Said Mahalo,” Lee Oskar plays funk, reggae, a lullaby and more, all while using less than a dozen harmonicas. “Morning Rush” pairs a caffeinated rhythm with two classic Japanese instruments, shakuhachi and shamisen, courtesy of Oskar’s collaborations with “Sancho” Youichrou Suzuki and Mayo Higa respectively. On “Funky Rhetoric,” the funk is more than rhetorical, and …