Ultimate encounter against Chara: https://www.youtube.com/watch?v=6y6OP3PAdRw
Download the extended version:
http://www.mediafire.com/download/x5xxq7xr4fd4b43/Undertale+-+Alphys+Takes+Action+%28Original+Remix%29+EXTENDED.mp3
Alphys Takes Action Original Remix by ThatOneKhajiit
Original Video:
https://www.youtube.com/watch?v=dRpJytxJfnU
Luke Neujahr YTChannel:
https://www.youtube.com/user/ThatOneKhajiit