Would like to find sheet music or recorded music by a group called
"The Pair Extraordinaire" This is someone who is used in tap dance
practice by friend of the family. And they have been looking to find
music recorded by this group.

The Pair Extraordinaire (Carl Craig and Marcus Hemphill) recorded
several LPs in the late 1960s. "It's a Wonderful World"" (Liberty
Records 7504) appears to be their most popular album.

CollectibleRecords.com shows a listing for The Pair Extraordinaire's
LP "It's a Wonderful World." Here's the listing:
 
" Pair Extraordinaire:It's a wonderful world,liberty,mo, autographed
by Carl Craig and Marcus Hemphill, vg++/m- MB$20 "
http://www.collectiblerecords.com/rockletterp.htm

MB$20 means "minimum bid $20." Instructions for purchasing from
CollectibleRecords.com are at:
http://www.collectiblerecords.com/bidbuy.htm

Long Tall Simon, a record seller in Philadelphia, shows the "Wonderful
World" LP for $15. Here's his listing:
" PAIR EXTRAORDINAIRE WONDERFUL WORLD      LIBERTY      VG-/EX+    
$15    GOOD '66 ALBUM "
http://home.earthlink.net/~hakenig/pictures/LPs.html

Californiaalbums.com also has "Wonderful World" and an additional
record called "In-Citement." The web site says that there's a $15
minimum bid:
http://www.californiaalbums.com/folk.htm

Canadian record seller DiscoveryRecords.com lists three albums:
"PAIR EXTRAORDINAIRE      IT'S A WONDERFUL WORLD      8.00   1   
LST7504
PAIR EXTRAORDINAIRE      LIVE AT THE ICE HOUSE      14.00   1   
LST7410
PAIR EXTRAORDINAIRE      RECORDED LIVE              12.00   1   
LST7440
http://www.discoveryrecords.com/MVAZ.TXT
Ordering information is at:
http://www.discoveryrecords.com/

Dustydisks.com lists "Wonderful World" and "In-Citement" each for $8.
http://www.dustydisks.com/albums_m_p.htm
Email information for the seller is at:
http://www.dustydisks.com/

I've also found several library copies if you'd rather borrow than
buy:

San Jose State University:
http://130.65.100.1:80/search/?searchtype=a&searcharg=pair+extraordinaire&submit2=Search

Brigham Young University:
http://catalog.lib.byu.edu/uhtbin/cgisirsi/X/0/123/?user_id=WEBSERVER&new_gatewaydb=ILINK&searchdata1=pair+extraordinaire&srchfield1=GENERAL%5ETITLE%5EGENERAL%5E%5Ewords%2Bor%2Bphrase&searchoper1=AND&search_entries1=GENERAL&search_type1=TITLE&special_proc1=&library=ALL&pubyear=&language=ANY&format=ANY&item_type=ANY&location=ANY&item1cat=&item2cat=ANY&match_on=KEYWORD&shadow=NO&sort_by=NONE&submit.
=0&submit.y=0

Bowling Green State University:
http://maurice.bgsu.edu/search/a?SEARCH=pair+extraordinaire

Search strategy: pair extraordinaire

I hope this helps. Good luck.