A b flat clarinet is the main kind of clarinet. It is in the key of B flat, that is why it is called a B flat clarinet. It has 22-28 keys and the embouchure or way you blow into the instrument, is very difficult to learn. Clarinet is very fun, and there is a Bass Clarinet, which is a regular clarinet, but it plays on a different key, not B flat.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)