When zachary sanders is the performer how many people is the music by?
CREATE TABLE table_191105_2 (music_by VARCHAR, performed_by VARCHAR)
SELECT COUNT(music_by) FROM table_191105_2 WHERE performed_by = "Zachary Sanders"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_191105_2 (music_by VARCHAR, performed_by VARCHAR) Question: When zachary sanders is the performer how many people is the music by? [/INST] SELECT COUNT(music_by) FROM table_191105_2 WHERE performed_by = "Zachary Sanders" </s>