10:50Music MakersProfessor Allegro's World of MusicEpisode 2: In the MountainsBBC Two Duration: 20 minutes Thu 28th Sep 2006, 10:50 on BBC Two Northern IrelandSeries 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