Main Shayar to Nahin is a song from Movie Bobby (1973) sung by Shailendra Singh with lyrics given by Vithalbhai Patel and music by Lakshmikant Pyarelal.
My rendition of the song on guitar is based on Em key using the chords Em, Em/C, G, Asus2, Am, B7, C and D because the melody notes for this song include the notes C, D, D#, E, F#, G, A and B.