Solution: Cross Your Eyes

SOLUTION:

Haha. The puzzle is the introtext. Now where are those extra cleverness points I was promised?

HINTS IN PUZZLE:

Title: Cross your t's, dot your i's
"intro text": tapping along with the music also describes the way telegraphs were sent

SOLUTION:

Convert to Morse code using i as dot and t as dash. UPPER CASE does not count.
Solve by method of choice to get answer word followed by end of message character
Resulting phrase is [start message/k] [answer word] [end of message/ar]
Morse letters are demarcated by punctuation ("," or ".")

Sadly, Cher's show was oversold so you choose to see
                                              -
Liberace today.  You tap your nails as quick pulses, copying his
 .       -    /      -          .        .         /     .    .
cadence.  Classical tunes have never been more heady, than when heard
       /       .    -                               / -
amid his sensualism.  When you are in a spell, cast by Mr. Showmanship,
  .   .         .  /               .         /    -      /          . /
you believe you could remain in Las Vegas endlessly.  All in all this
       .                  .  .                     /      .      - .
was a great gig.  Even Og and Wally, normally unmoved by such shows,
          -  . /
were awed.

-.-	[start]
-..	D
..	I
.-	A
-...	B
.	E
-	T
.	E
...	S
.-.-.	[eom]