"Most soon to be" is a phrase that can be seen as grammatically incorrect, as "most" is commonly used as an adverb to mean "very" or "extremely". However, if it were to be viewed as a phrase meaning "the majority of those who will be soon", the IPA phonetic transcription would be /moʊst suːn tuː bi/, with emphasis on the first syllable of each word. This could be clarified by rephrasing the sentence to something like "The greater number of individuals who will soon be".