user: Question: Which composer had a CHR chart peak at #2?
Columns: ['Year', 'Single', 'CHR chart peak', 'Album', 'Composer(s)']
Types: ['real', 'text', 'real', 'text', 'text']
Sample row: [1978.0, 'Sail On', 3.0, 'Sail On', 'Chris Christian']
SQL:

assistant: SELECT "Composer(s)" FROM "Table" WHERE "CHR chart peak" = 2.0;