Liebster Gott, wenn werd ich sterben (BWV 8): opening chorus

Today we bring you 24 repeated notes on the same pitch.  Can you think of any other Bach piece which features this special effect?  Certainly this is unique in the orchestrational context here: a high-pitched recorder, beeping out a digital-sounding alarm clock noise.  Or is it a bell ringing?  We explore what this all means -- because, of course, with Bach, it MEANS something.  

Liebster Gott, wenn werd ich sterben (BWV 8) performed by the Netherlands Bach Society. Shunske Sato, conductor; Benny Aghassi, recorder solo