All great art gives you happiness by touching your heart and not just your mind. It elevates you to a different level of existence and appreciation. So too with music. The audio stimulus goes deep within and this is why it is very important for me as an artist to have the listener's sustained involvement. That is why I sing with all my heart.
A raga should be developed so that it unfurls like a bud blooming into a rose, each note coloured with its own mood, its own feeling. It is the musical medium to take you to the ultimate emotion, ras or bhav.