Music, song or melodious sound, we can say it in many forms, which defines our emotional state, more than that our story within self without knowing. Totally depends upon our mind that is entangled in our current status or surrounding. If we're happy, songs of joy and melody polishes our happiness. On other hand while disappointment on something a sad song make moment and surrounding sorrowful.

The above context is totally the study of music and emotion that tries to apprehend the psychological connection among human reactions and music. The branches of music psychology covers many areas of study, which includes the nature of emotional reactions towards music as to how features of the listener may depicts which emotions are felt and also depicts elements of a musical performance composition which may evoke certain reaction.

Brain Booster
Research showed that when kids initiate to learn how to play music in childhood their brain starts to hear and process sounds that they are unable to hear otherwise. This helps them to discover "neurophysiologic distinction" between certain sounds that would be helpful in literacy which results in enhancing the academic front of the child.

Nowadays many of parents doubtlessly by reading the above sentence starts Google-ing music classes in their local area. But if your lad doesn't make interest to play an instrument and not engage actively in the class-opts to stare at wall in lieu of participating, then he or she cannot get the benefit of those classes anyhow.

Recent study from Northwestern University uncovers that in order to completely scythe (cut) the cognitive benefits of musical class, kids shouldn't just sit there and let sound of music pass unnoticeably over them. They have to be an active participant of the class. "The group of highly enthusiastic, little variations in music participation, attendance and class engagement for tells that the strength of neural processing after the training has started with amazing results" said Nina Kraus, director of Northwestern's Auditory Neuroscience Laboratory.

Reviewing on study of brain's correlation of music evoked emotions by 'Stephan Koelsch' published in 'Nature's Reviews and Neuroscience', here the core question arises

Why Music alters the way that we feel?
Depicting filters and frames decades of brain, Koelsch begins with the most primitive brain sources of music evoked emotions. When music falls on ear it stimulates spinal motor neurons and vestibular, visceral systems (deep sensibility).

These are primary cause for some of stimulating effects of music which may also add the senses we get when music make us tend to 'move with the beat'.

Focusing on three main members - the amygdala, the nucleus accumbens and the hippocampus Koelsch points the core emotion brain networks.

The amygdala (Greek word 'amygdale' means 'almond') the deep, central brain structure that play a key role in emotions (such as fear and pleasure).
In line of Koelsch, the amygdala is an integral part of enormous network that controls approach withdrawing behavior in response to social affective cues, how we evaluate and learn about positive as well as negative stimuli reinforced from certain musical sounds.

Next Nucleus accumbens (NA) known to be highest degree of emotional experiences, thrill or frisson. NA activates the signals of eagerness of rewarding experience of pleased music (actually enjoying the music).

Lastly, Hippocampus, the region of brain located inside the temopral lobe which plays a role in memory and emotion, because of its resemblance to a mythological creature with front head with four limbs of a seahorse.

After the biological reactions ‘how music actually evoke emotions?’

External stimuli
One of the origins of music relates to the listener's responses to any of the sound, this is how music composer play, by creating an ebb and flow of tension and relaxation, which in right ingredients provides recipes of varied emotional responses or reactions.