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hope it helps !! (✿^‿^)

1) When

2) While/As

3) When

4) When

5) While/As

Explanation:

There are two notable clauses here; things that happen over a duration of time, and things that happen over a point in time.  The first clause in every example is a duration of time.  When the second occurs at a point in time, use when.  When it occurs over a duration of time, use while/as.

Hope it helps :) and let me know if you want me to elaborate.

themselves

an intensive pronoun is a pronoun that ends in self or selves, such as himself, herself, themselves, yourself, ourselves. since band members is a third person plural, the correct intensive pronoun would be themselves. if the band was talked about as a collective noun, itself would be the appropriate intensive pronoun. intensive pronouns are used to add emphasis to the noun it's modifying which is why it directly follows it.