A Harvard University choir helped the charity Habitat Bermuda raise $900 thanks to a free concert yesterday lunchtime.The 90-strong group, known as the Kuumba Singers, are dedicated to the expression of black creativity and spirituality through song.The group was founded in 1970 as a source of unity and strength for black students and has grown to be Harvard's largest multicultural organisation.The choir performed yesterday for school students at the Ruth Seaton James Centre for the performing arts.According to US Consulate spokeswoman Astrid Black: “Habitat Bermuda received over $900 in voluntary contributions from an enthusiastic audience.”The group, who are spending their Spring Break in Bermuda, will also host concerts at St John AME Church in Bailey's Bay at 7.30 tonight, and at the same time on Friday at Mount Zion AME church in Southampton.A farewell concert will be held on Saturday, March 19 at 8am at the Willowbank hotel in Sandys.