4 February 2017 Last updated at 00:20 GMT
The Choir with No Name was set up in 2011 after the original began in London in 2008.
The singers meet every Thursday and not only sing together but also enjoy dinner after rehearsals.
The choir is now encouraging anyone to sing with it and to help raise money for the charity.
Video journalist: Simone Stewart
A choir set up for the homeless in Birmingham recently celebrated its fifth birthday.