RBR.Music on Instagram: "A gregariously soulful, yet sweet toned improviser, alto saxophonist Lou Donaldson helped to define the sound of swinging hard bop and groove-based soul-jazz. Nicknamed “Sweet Poppa Lou,” Donaldson built upon the bebop style of his idol Charlie Parker, emerging from the seminal Art Blakey group of the ‘50s alongside trumpeter Clifford Brown. He released a slew of his own iconic Blue Note albums, peaking with 1958’s Blues Walk and 1967’s Alligator Boogaloo; both spawned t