For those of us who are Ubuntu junkies... The way to enter Unicode is by holding down the Ctrl + Shift keys and typing the code..
♬ ♫ ♪ etc.. etc...
whoa!
your way is wicked
when I did a [ctrl] + [shift] + [keypad 0191] ....it switches tabs
anyway, [R-Alt] + [keypad 0nnn] is a standard IBM PC function
It works on an old 8088 model, 486, pentium, etc....
but of course, you already knew that.