Episode 105 : The Voice Is an Instrument As part of Farkas Faffner ' s latest attempt to make money from Faffner Hall , he ' s enlisted a zookeeper as a business partner . He chases a musical fish , who loves to sing scales , through the hall . After the Frackles show Fughetta their way of singing close harmony , the zookeeper finally catches the fish , then goes after the Frackles . When Farkas introduces the zookeeper to Fughetta , he becomes enamored . It ' s soon revealed that Farkas has sold the Hall to the zookeeper , who is capturing the musicians in order to turn the place into a zoo . Fughetta spreads the news to Mimi , Riff and the Wild Impresario , who all end up in tears . Fughetta fondly recalls the Hall when it was at its peak , in a flashback of a performance of the Mozart opera " Don Giovanni " , starring herself ( in human form ) as the Spanish maid , and opera singer Thomas Allen in the title role . The ever - giddy Fughetta is hardly able to suppress her crush on Allen and his wonderful singing voice . Back in the present , Fughetta concludes that she must leave Faffner Hall , as she cannot haunt a zoo . But Wild has a different idea - - inspired by the story Fughetta recently told , he ' s concluded that she must give a concert , in order to make enough money to buy back the Hall . However , she confesses to Wild that she can ' t sing . Wild reassures her that anyone can sing , and she can use her rich , varied voice as an instrument . Fughetta temporarily stops time in order to talk to the busts of Mozart , Beethoven and Handel , who agree that she must give the concert . They narrate a flashback featuring an a capella group they heard on the radio recently , the Electric Phoenix , who use their voices as instruments ( one of the members even does an imitation of Miss Piggy ) . Filled with newfound enthusiasm , she un - freezes time , and tells Wild that she will give the concert . However , there are so many ways that she can use her voice , it ' s hard for her to decide which to use . Wild refers her to his friend , jazz singer Marion Montgomery , who sings " Just In Time " . Midway through the song , Fughetta requests some " elementary voice tuition , " and Marion walks her through the singing process as they finish the song together . Meanwhile , Farkas has trapped all the Faffner Hall musicians in a cage . Mimi reassures them that posters for " Fughetta the Singing Ghost " are now all over town , so their troubles will soon be over . She further tries to cheer them up with a new composition she wrote for Riff , " Ba - Dum with Grunts " , accompanied by the Grunt Bags . In addition to the instruments they play , they also use their voices as instruments . Wild learns that the concert has sold out , which raises everyone ' s hopes . Unfortunately , when the time of the concert arrives , no one shows up . It ' s revealed that all of the calls asking for tickets were made by none other than Farkas , who disguised his voice ! " I ' m the mimic of the century ! " he cries . " Isn ' t it amazing what the voice can do ? " Farkas orders everyone out of the building - - but the lovestruck zookeeper , exercising his rights as the new owner , insists on hearing Fughetta ' s lovely singing voice , saying that he would give anything for it . Right then and there , he tells Farkas , " You can have your hall back ! " as an alligator grabs the money bag out of his hands . Everyone rushes to the concert hall , where " the very first live concert by a dead person " is performed .