Churches are free to organize themselves in any way they see fit, so there is no single answer to this question. Some churches may have a choir as part of their worship service, while others may not. It really depends on the church and what their members feel called to do. Personally, I believe that having a church choir can be a wonderful way to praise God and lead people in worship. A good choir can add a lot of beauty and sanctity to a service, lifting up everyone's hearts in prayer. However, I also understand that not every church has the resources or personnel to maintain a choir. And that's perfectly okay! There are many other ways to lead people in worship and praised besides singing.