Below is an 8th note (a.k.a QUAVER) Below is a 16th note (a.k.a SEMIQUAVER)
Below is a 32nd note (a.k.a DEMISEMIQUAVER)
This is a 64th note (a.k.a HEMIDEMISEMIQUAVER)
Below is a 128th note (a.k.a QUASIHEMIDEMISEMIQUAVER)
Now, can you tell what are the names of these rests?
Below is a 32nd note (a.k.a DEMISEMIQUAVER)
This is a 64th note (a.k.a HEMIDEMISEMIQUAVER)
Below is a 128th note (a.k.a QUASIHEMIDEMISEMIQUAVER)
Now, can you tell what are the names of these rests?
Note duration shorter than 64th note is rare but known. You can find 128th note and even 256the notes in Beethoven's music. Let's look at an extreme case; the following exerpt is from Toccata Grande Cromatica by Anthony Phillip Heinrich (1781-1861):