Barbershop Quartet is a group of four singers: a lead, a tenor, a bass, and a baritone. These four singers armonize to produce a purely American form of music developed in the 19h century. Consider the incomplete lass definitions below. public class BarberShopQuarteti public BarberShopQuartetol Tenor highSinger new Tenor): Baritone bari new Baritone): Lead melody new Lead): Bass lowSinger new Bass() System.out.printin("Quartet created."); + public class Singer public SingerO System.out.printin("Singing..." public class Tenor extends Singer public Tenor( System.out.printinf"Singing..the high notes" public class Baritone extends Singer! public Baritone) System.out.println("Singing...harmonizing with the lead"); Barbershop Quartet is a group of four singers: a lead, a tenor, a bass, and a baritone. These four singers armonize to produce a purely American form of music developed in the 19h century. Consider the incomplete lass definitions below. public class BarberShopQuarteti public BarberShopQuartetol Tenor highSinger new Tenor): Baritone bari new Baritone): Lead melody new Lead): Bass lowSinger new Bass() System.out.printin("Quartet created."); + public class Singer public SingerO System.out.printin("Singing..." public class Tenor extends Singer public Tenor( System.out.printinf"Singing..the high notes" public class Baritone extends Singer! public Baritone) System.out.println("Singing...harmonizing with the lead")