11:50Music MakersProfessor Allegro's World of MusicEpisode 2: In the MountainsBBC Two Duration: 20 minutes Fri 26th Jan 2001, 11:50 on BBC Two WalesSeries exploring musical concepts. In this edition, an investigation of pitch. Featuring a trip to the Andes.GenresLearningMusicBrandMusic MakersSeriesMusic Makers: Professor Allegro's World of Music Source: BBC Online