07:15Key MattersSeries 1F sharp majorBBC Radio 4 Extra Duration: 15 minutes Sun 11th May 2014, 07:15 on BBC Radio 4 ExtraAvailable for over a yearListen nowIvan Hewett examines five musical keys. Today: F sharp major, as used by Beethoven, Mozart and Messiaen. With Liz Garnett.GenresMusicClassicalBrandKey MattersSeriesKey Matters: Series 1 Source: BBC Online