Questions & Answers about Chante avec moi, ne serait-ce que pour t'amuser.
What exactly does the phrase ne serait-ce que mean here, and how is it constructed?
It translates to "if only" or "were it only". It is a fixed phrase made up of the negative ne (without pas), the conditional form of être (serait), the impersonal pronoun ce, and the conjunction que. You use it to introduce a minimum condition or reason, essentially saying "even if it is just to do this."
Does ne serait-ce que ever change its form, for example, if it is followed by a plural noun?
Why do we use the pronoun t' in pour t'amuser instead of the dictionary form s'amuser?
When you use a reflexive verb in its infinitive form (like s'amuser, meaning "to have fun"), the reflexive pronoun still has to agree with the person actually doing the action. Since the speaker is giving a command to "you" (Chante avec moi), the pronoun must change to t' to match the implied tu.
Why is there no "s" at the end of Chante?