The note two octaves and one semitone above the lowest note -LRB- C# for soprano , tenor and great bass instruments ; F# for sopranino , alto and bass instruments -RRB- is difficult to play on most recorders .

Its lowest is F . The other main sizes are the tenor recorder -LRB- with lowest note C -RRB- and the bass -LRB- with lowest note F -RRB- .
