That is the 1983 “Alvin and the Chipmunks” show, which was a reprise of the 1961 cartoon “The Alvin Show.” The song was written new for the 80’s show and so sounds like a lot of 80’s music all mashed up together.
Here it is before the voices were altered to be “chipmunky.” It’s sung by Ross Bagdasarian Jr.., the creator of the newer shows and the son of Ross Bagdasarian Sr., the creator of the original song and shows. It sounds like Weird Al because Ross had to over-pronounce each word for clarity when the pitch of his voice was raised. Weird Al over pronounces when he sings too.
These are the lyrics, which make reference to the fact that there was an earlier Chipmunks show:
“Watch out cause here we come
It’s been a while but we’re back with style
So get set to have some fun
We’ll bring you action and satisfaction
We’re the chipmunks
C-H-I-P-M-U-N-K
We’re the chipmunks
Guaranteed to brighten your day
When you feel like a laugh
Give us a call we’ll give you a roll
And if you feel like a song
Tune in to us and sing right along
We’re the chipmunks
Coming on stronger than ever before
We’re the chipmunks
Alvin, Simon, Theodore”
The song I think of as The Chipmunks’ theme song is the original one, The Chipmunks Song. This one was written by written by Ross Bagdasarian, Sr. (a.k.a. David Seville) in 1958:
”(All right you Chipmunks)
(Ready to sing your song)
(I’ll say we are)
(Yeah)
(Let’s sing it now)
(Okay, Simon)
(Okay)
(Okay, Theodore)
(Okay)
(Okay, Alvin, Alvin, ALVIN)
(OKAY)
Christmas, Christmas time is near
Time for toys and time for cheer
We’ve been good, but we can’t last
Hurry Christmas, hurry fast
Want a plane that loops the loop
Me, I want a hula hoop
We can hardly stand the wait
Please Christmas, don’t be late
(Okay fellas get ready)
(That was very good, Simon)
(Naturally)
(Very good Theodore)
(Ahhh)
(Ah, Alvin, you were a little flat, watch it)
(Ah, Alvin, Alvin, ALVIN)
(OKAY)
Want a plane that loops the loop
I still want a hula hoop
We can hardly stand the wait
Please Christmas, don’t be late
We can hardly stand the wait
Please Christmas, don’t be late
(Very good, boys)
(Let’s sing it again)
(Yeah, lets sing it again)
(No, That’s enough, lets not overdo it)
(What do you mean overdo it)
(We want to sing it again)
(Now wait a minute, boys)
(Why can’t we sing it again)
[chipmunk chatter]
(Alvin, cut that out..Theodore, just a minute)
(Simon will you cut that out? Boys…)”