The word clarinet is used as a noun
For each of these you just do what they say after the ":"
A name used for an individual person, place, or organization, spelled with initial capital letters.
The answer to the first question is
4. a present-tense verb in a dependent clause.
The answer to the second question is
2. The words are an infinitive phrase that functions as an adverb modifying the verb comes.
To provide an introduction