Question: Where did Katrina hit the hardest in the Toussaint performer's birthplace?

Knowledge 1: Toussaint (album)
Toussaint is a 1971 solo funk, jazz and soul album by Allen Toussaint, his second solo album and his first since the 1950s. [SEP] Knowledge 2: Marshall Sehorn
Marshall Estus Sehorn (June 25, 1934 – December 5, 2006) was an American A&R man, songwriter, music publisher and entrepreneur who played an important role in the development of R&B and popular music in New Orleans between the 1950s and 1970s, particularly as the business partner of record producer Allen Toussaint. [SEP] Knowledge 3: Effects of Hurricane Katrina in New Orleans
Hurricane Katrina Category 3 major hurricane (SSHWS / NWS) Hurricane Katrina near peak intensity Formed August 28, 2005 Dissipated August 29, 2005 Highest winds 1 - minute sustained: 125 mph (205 km / h) Lowest pressure 920 mbar (hPa); 27.17 inHg Fatalities Up to 1,464 total Damage $70 billion (2005 USD) Areas affected Greater New Orleans Part of the 2005 Atlantic hurricane season
Knowledge 1: Toussaint (album)
Toussaint is a 1971 solo funk, jazz and soul album by Allen Toussaint, his second solo album and his first since the 1950s. [SEP] Knowledge 2: The Bright Mississippi
The Bright Mississippi is an album by New Orleans Jazz and R&B pianist Allen Toussaint released on Nonesuch Records in 2009. [SEP] Knowledge 3: Effects of Hurricane Katrina in New Orleans
Hurricane Katrina Category 3 major hurricane (SSHWS / NWS) Hurricane Katrina near peak intensity Formed August 28, 2005 Dissipated August 29, 2005 Highest winds 1 - minute sustained: 125 mph (205 km / h) Lowest pressure 920 mbar (hPa); 27.17 inHg Fatalities Up to 1,464 total Damage $70 billion (2005 USD) Areas affected Greater New Orleans Part of the 2005 Atlantic hurricane season
Knowledge 1: Toussaint (album)
Toussaint is a 1971 solo funk, jazz and soul album by Allen Toussaint, his second solo album and his first since the 1950s. [SEP] Knowledge 2: Marshall Sehorn
Marshall Estus Sehorn (June 25, 1934 – December 5, 2006) was an American A&R man, songwriter, music publisher and entrepreneur who played an important role in the development of R&B and popular music in New Orleans between the 1950s and 1970s, particularly as the business partner of record producer Allen Toussaint. [SEP] Knowledge 3: Hurricane Katrina effects by region
By August 31, eighty percent (80%) of the city of New Orleans was flooded by Hurricane Katrina, with some parts of the city under 20 feet (6.1 m), of water. Over 50 breaches in region's levee system were catalogued, five of which resulted in massive flooding of New Orleans. The 17th Street Canal levee was just south of the Hammond Highway Bridge. Levees adjacent to London Avenue breached in two locations: one near Robert E. Lee Boulevard and one between Filmore Avenue and Mirabeau Avenue. Two breaches also occurred in the Industrial Canal adjacent to Surekote Road. Levee repair efforts were undertaken, involving reinforcing the levees with 3,000 pounds (1,400 kg) sandbags deployed by U.S. Army Chinook and Black Hawk helicopters. The 17th Street Canal levee repair was completed by September 5, 2005 and subsequently, the three canals were repaired all the way to Lake Pontchartrain. The Army Corps of Engineers added flood gates to the three canals.

Answer: the city of New Orleans