This is the 4567th most frequent Russian word.
голос
"Voice" or "vote."
In this sentence, 'голос' refers to the auditory representation of someone's speech when recorded.
Мой голос всегда звучит громче в записи.
My voice always sounds louder on a recording.
Here, 'голос' metaphorically represents their ability or occasion to vote or express their opinion in a decision-making process.
Они дают свой голос за изменения в стране.
They cast their vote for changes in the country.
The word 'голос' is used here to describe the sound and quality of someone's voice.