Yes, if you are good at singing in various styles. Singing in various styles teach a few things about voice quality and tunes.<p>1. Every language has its voice quality. So, learning phonemes alone does not help us one to acquire a new accent or language. Voice qualities vary within a language itself: compare the southern accents, midwestern accents, New York accent, British accents. Yes, there are phonemic differences between accents within a language: but there is a change in the voice quality.<p>2. Academic research about the voice quality in languages have not reached beyond what John Laver had said (check his phonetic description of voice quality). And of coure, IPA has incorporated some symbols like 'breathy voice', etc, which you can see in the extended IPA. To me, voice quality should be the first thing one shud master before getting into phonemes, lexical stress, intonational stress, etc.<p>Academics are too busy with their instrumental (acoustic) phonetics. Even majority of phoneticians are just into instrumental phonetics. Ian Catford, a great phonetician, advised students of linguistics in general to master how to use their vocal apparatus.<p>3. Joe Estill, an opera singer turned a voice teacher, did a great research on how to train anyone to sing. Her focus is on how to acquire voice quality. She calls such steps as 'figures'. They are like thin voice, thick voice, breathy voice; then adding other combinations to them: high larynx, low larynx, Aryepiglottic sphincter, etc. Such skills help a singer to sing in various styles. Even if you want to do pitch match properly, you should do it in a thin voice (not with the speaking voice, which is thick voice for Americans, kinda semi-thick(breathy) for Indians in the south Asia, etc.<p>4. There is another thing singers and instrument players are good at: how to remember tunes. Even though speech is not like a song, you can find possible tunes of a language. In linguistics, it is called "intonational phrase". So, one does not need to master phonemes of a target language in order to imitate the tune units (tunits or intonational phrase) of any language. How many language training materials teach this?<p>Most, if not all, language training materials subordinate the voice quality and the tunits to phonemes and lexical stress/lexical tone. Whereever they touch about tunits, they spend 4 pages on the intonation of the target language.