<P> During the year, 12 acts had achieved a first U.S. number - one single, namely: Alicia Keys, Crazy Town, Mary J. Blige, Nickelback, OutKast, and Shaggy all of whom were lead artists, and Ja Rule, Rayvon, and Ricardo "RikRok" Ducent as featured guests . R&B singer Mýa, pop singer Pink, and rapper Lil' Kim earned their first number one with a collaborative cover version of the former number one "Lady Marmalade", which also features singer Christina Aguilera . R&B singer Usher and reggae singer Shaggy had two number - one singles in 2001 . </P> <P> Janet Jackson's "All for You" is the longest - running single of the year, staying at number one for seven consecutive weeks . 2001 is the first year since 1993 that there has not been at least one number - one hit with a double - digit run . "All for You" is also responsible to give to Jackson the tenth Hot 100 number one of her career; making her the fourth female artist with most number ones in the rock era . Other singles that had a multiple chart run includes Alicia Keys' "Fallin"' and Mary J. Blige's "Family Affair"; both stayed atop for six weeks . </P> <Table> <Tr> <Th> Issue date </Th> <Th> Song </Th> <Th> Artist (s) </Th> <Th> Reference </Th> </Tr> <Tr> <Td> January 6 </Td> <Td> "Independent Women Part I" </Td> <Td> Destiny's Child </Td> <Td> </Td> </Tr> <Tr> <Td> January 13 </Td> <Td> </Td> </Tr> <Tr> <Td> January 20 </Td> <Td> </Td> </Tr> <Tr> <Td> January 27 </Td> <Td> </Td> </Tr> <Tr> <Td> February 3 </Td> <Td> "It Wasn't Me" </Td> <Td> Shaggy featuring Ricardo "RikRok" Ducent </Td> <Td> </Td> </Tr> <Tr> <Td> February 10 </Td> <Td> </Td> </Tr> <Tr> <Td> February 17 </Td> <Td> "Ms. Jackson" </Td> <Td> OutKast </Td> <Td> </Td> </Tr> <Tr> <Td> February 24 </Td> <Td> "Stutter" </Td> <Td> Joe featuring Mystikal </Td> <Td> </Td> </Tr> <Tr> <Td> March 3 </Td> <Td> </Td> </Tr> <Tr> <Td> March 10 </Td> <Td> </Td> </Tr> <Tr> <Td> March 17 </Td> <Td> </Td> </Tr> <Tr> <Td> March 24 </Td> <Td> "Butterfly" </Td> <Td> Crazy Town </Td> <Td> </Td> </Tr> <Tr> <Td> March 31 </Td> <Td> "Angel" </Td> <Td> Shaggy featuring Rayvon </Td> <Td> </Td> </Tr> <Tr> <Td> April 7 </Td> <Td> "Butterfly" </Td> <Td> Crazy Town </Td> <Td> </Td> </Tr> <Tr> <Td> April 14 </Td> <Td> "All for You" </Td> <Td> Janet </Td> <Td> </Td> </Tr> <Tr> <Td> April 21 </Td> <Td> </Td> </Tr> <Tr> <Td> April 28 </Td> <Td> </Td> </Tr> <Tr> <Td> May 5 </Td> <Td> </Td> </Tr> <Tr> <Td> May 12 </Td> <Td> </Td> </Tr> <Tr> <Td> May 19 </Td> <Td> </Td> </Tr> <Tr> <Td> May 26 </Td> <Td> </Td> </Tr> <Tr> <Td> June 2 </Td> <Td> "Lady Marmalade" </Td> <Td> Christina Aguilera, Lil' Kim, Mýa and Pink </Td> <Td> </Td> </Tr> <Tr> <Td> June 9 </Td> <Td> </Td> </Tr> <Tr> <Td> June 16 </Td> <Td> </Td> </Tr> <Tr> <Td> June 23 </Td> <Td> </Td> </Tr> <Tr> <Td> June 30 </Td> <Td> </Td> </Tr> <Tr> <Td> July 7 </Td> <Td> "U Remind Me" </Td> <Td> Usher </Td> <Td> </Td> </Tr> <Tr> <Td> July 14 </Td> <Td> </Td> </Tr> <Tr> <Td> July 21 </Td> <Td> </Td> </Tr> <Tr> <Td> July 28 </Td> <Td> </Td> </Tr> <Tr> <Td> August 4 </Td> <Td> "Bootylicious" </Td> <Td> Destiny's Child </Td> <Td> </Td> </Tr> <Tr> <Td> August 11 </Td> <Td> </Td> </Tr> <Tr> <Td> August 18 </Td> <Td> "Fallin"' </Td> <Td> Alicia Keys </Td> <Td> </Td> </Tr> <Tr> <Td> August 25 </Td> <Td> </Td> </Tr> <Tr> <Td> September 1 </Td> <Td> </Td> </Tr> <Tr> <Td> September 8 </Td> <Td> "I'm Real (Murder Remix)" </Td> <Td> Jennifer Lopez featuring Ja Rule </Td> <Td> </Td> </Tr> <Tr> <Td> September 15 </Td> <Td> </Td> </Tr> <Tr> <Td> September 22 </Td> <Td> </Td> </Tr> <Tr> <Td> September 29 </Td> <Td> "Fallin"' </Td> <Td> Alicia Keys </Td> <Td> </Td> </Tr> <Tr> <Td> October 6 </Td> <Td> </Td> </Tr> <Tr> <Td> October 13 </Td> <Td> </Td> </Tr> <Tr> <Td> October 20 </Td> <Td> "I'm Real (Murder Remix)" </Td> <Td> Jennifer Lopez featuring Ja Rule </Td> <Td> </Td> </Tr> <Tr> <Td> October 27 </Td> <Td> </Td> </Tr> <Tr> <Td> November 3 </Td> <Td> "Family Affair" </Td> <Td> Mary J. Blige </Td> <Td> </Td> </Tr> <Tr> <Td> November 10 </Td> <Td> </Td> </Tr> <Tr> <Td> November 17 </Td> <Td> </Td> </Tr> <Tr> <Td> November 24 </Td> <Td> </Td> </Tr> <Tr> <Td> December 1 </Td> <Td> </Td> </Tr> <Tr> <Td> December 8 </Td> <Td> </Td> </Tr> <Tr> <Td> December 15 </Td> <Td> "U Got It Bad" </Td> <Td> Usher </Td> <Td> </Td> </Tr> <Tr> <Td> December 22 </Td> <Td> "How You Remind Me" </Td> <Td> Nickelback </Td> <Td> </Td> </Tr> <Tr> <Td> December 29 </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Issue date </Th> <Th> Song </Th> <Th> Artist (s) </Th> <Th> Reference </Th> </Tr>

What was the number one song on july 23rd 2001
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