Draw an ERD The Songbirds is a group of singers which performs various concerts throughout the year. They set a concert time and venue (place.) To prepare a concert they go to their list of favorite songs and select between twelve and fifteen songs to perform. The may do some of their more popular songs at almost every concert while less well known songs may be performed more rarely. For a specific concert each song will be assigned to one of their piano accompanists who will lead that song at that concert.