Сначала распойся, потом передай беспроводной микрофон другу.

They organize the actions in sequence:

• сначала = first, at first
• потом = then, after that

So the sentence is structured as First do X, then do Y.

This is a very common way to give step-by-step instructions in Russian.

Распойся is the singular imperative of распеться.

This verb is used in a singing context and means something like:

• get your voice going
• warm up by singing
• get into full voice

So it is not just any kind of warming up. It specifically suggests singing enough to loosen up the voice and start singing freely.

Because the verb is распеться, which is a reflexive verb.

In Russian, many verbs end in -ся or -сь. This does not always mean a literal English-style reflexive like wash yourself. Often it is just part of the verb’s meaning.

Here, распеться is simply the normal dictionary form of the verb meaning to get warmed up vocally / to start singing freely. So -ся belongs to the verb itself.

Its imperative form is:

• распойся = singular
• распойтесь = plural or polite

Because this verb has an irregular stem pattern, and the imperative is formed from that pattern.

You can see related forms like:

• распеться
• распоюсь
• распоёшься
• распойся

So распойся is the correct imperative, even if it looks unusual at first.

For learners, the best approach is to memorize it as a whole form:

• распеться → распойся

This is about aspect.

• передай is perfective, from передать
• передавай is imperfective, from передавать

In commands, the perfective often means do this once and complete it. That fits here: the speaker wants one complete action — hand the microphone over.

So:

• передай микрофон другу = pass the microphone to your friend
• передавай would sound more like an ongoing, repeated, or process-focused action in many contexts

For a simple one-time instruction, передай is the natural choice.

Because друг is the recipient of the action.

In Russian, with verbs like дать, передать, показать, the person receiving something is usually in the dative:

• передай другу = pass to your friend

So the structure is:

• передай = pass
• микрофон = the thing being passed
• другу = to the friend, the receiver

English usually uses to here, but Russian often does not need a preposition.

It is a direct object, so it is in the accusative case. But for an inanimate masculine singular noun, the accusative often looks exactly like the nominative.

So:

• nominative: микрофон
• accusative: микрофон

That is why there is no visible change.

Also, беспроводной agrees with микрофон, and here it also keeps the same form because it is modifying an inanimate masculine singular noun in the accusative:

• беспроводной микрофон

It is addressed to one person, or to someone you address informally as ты.

You can tell from the imperative forms:

• распойся
• передай

If you wanted to say it to several people, or to one person politely, you would use:

• Сначала распойтесь, потом передайте беспроводной микрофон другу.

So:

• singular informal: распойся, передай
• plural / polite: распойтесь, передайте

Yes. Russian word order is fairly flexible.

The version given is neutral and clear:

• Сначала распойся, потом передай беспроводной микрофон другу.

But other orders are possible, depending on emphasis. For example:

• Сначала распойся, потом другу передай беспроводной микрофон.
• Потом передай другу беспроводной микрофон.

These still mean basically the same thing, but the emphasis shifts slightly.

The original order is a good standard order for a learner to use.

A helpful stressed version is:

Снача́ла распо́йся, пото́м переда́й беспрово́дной микрофо́н дру́гу.

A few notes:

• снача́ла
• распо́йся
• пото́м
• переда́й
• беспрово́дной
• микрофо́н
• дру́гу

Stress matters a lot in Russian pronunciation, so it is worth learning these together with the words.