F. Sponga "Ricercari à4" Ricercar 4Triple Theme Fugue bar1-22 : Theme 1 bar23-47 : Theme 1 + 2 bar48-63 : Theme 2 + 3 bar64-89 : Theme 1 + 2 + 3 http://aeolianconsort.chakin.com/Sponga.htm