Sample 4 is also a full octave, starting on a different note. What are the notes of this sequence? It starts on B so the sequence is B C C# D D# E and so on It starts on C so the sequence is C C# D D# E F and so on It starts on G so the sequence is G G# AA# B C and so on It starts on A also, but a different A than for sample 3. So the sequence is A A# B C C# D D# E and so on one octave higher than sample 3