m2 = Minor Second, meaning the second note is only 1 Half Step away from the first note.
M2 = Major Second, meaning the second note is only 2 half steps OR 1 whole step away from the first note.
Note Naming #6 (Percussion)Note Naming #5 (Ledger Lines)
Note Naming #4 (Ledger Lines)
Note Naming #3
Note Naming #2
Note Naming #1
