“All her life, Subbulakshmi was to be hypnotised by the sound of tambura strings. There was clinical absorption in her act of tuning the two tamburas, Lakshmi and Sarasvati, each with ivory vignettes of the goddesses on the stem. With multi-stringed Miraj tamburas, this became sheer obsession. (She rewarded daughter and vocal accompanist Radha with her warmest smile whenever she achieved perfect tuning in the twin tamburas). Time stood still as she played the strings and sang slow phrases, pausing on different notes to exult, “Can you hear the gandhara now? Madhyama? Nishada?” Then, reluctantly, she would place the tambura on the mat, touching the stem with her fingers and pressing them lightly on her eyes in a gesture of worship.


Even her childhood games revealed Kunja’s absorption in the art form. One of them started with tuning the tambura carefully until the plucked strings cast a spell with their resonance. Eyes closed, she was lost in another world. Then she stopped, sang without the tambura, and plucked the strings again to check if she had stayed true to sruti. Throughout the day, in between household jobs, she kept returning to the tambura to see if she could recall that pitch steadily and accurately.”   
Link to the full excerpt from MS and Radha by Gowri Ramnarayan :
http://srutimag.blogspot.com/2012/02/child-ms-meets-teacher.html