Some keyboard shortcut : (with ALT key as Key menu)

Enter Play the music at the current row
.

Play the pattern only

Space Stop music, sound or recording
F6,F7,F8,F9,F10 Row position in the pattern
Insert Insert a row.
Shift + Insert. New pattern
Alternate + Insert New pattern at the next position.
Control + Insert Insert a position in the sequence.
Delete Delete a row
Control + Delete Delete a position in the sequence.
Backspace Remove a note
/ Show Command / Internal volume
-,+ Change current sound
* Set the current sound to the sound note
MENU_KEY + 0..9 Set the jump line
Page Down Set/Unset Edit mode
Page Up Listen the current pattern line.
TAB Next track or previous track with the shift key.
F5,shift + F5,Alternate + F5 Delete current block,track,pattern
F1,F2 Start/end block
F3 Define a block on the current note.
SHIFT+F3 Copy track
ALT+F3 Copy pattern
F4, Shift + F4, Alt + F4 Copy block,track,pattern
ALT + key down Next position
ALT + key up Previous position
Start key Scroll to the up of the screen.
End key Scroll to the end of the screen.
Alternate + P Show/Unshow all the mix panels.
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