A famous musician who might have received a Meghalaya award for music is:

Lou Majaw
A.R. Rahman
K.J. Yesudas
Shreya Ghoshal

The correct answer is: a) Lou Majaw.

Lou Majaw is a famous musician from Meghalaya. He is known for his unique style of music, which blends traditional Khasi folk music with rock and roll. He has been awarded the Meghalaya State Award for Music on several occasions.

A.R. Rahman is a famous musician from Tamil Nadu. He is known for his work in Indian film music. He has won several awards, including two Academy Awards, two Grammy Awards, and a Golden Globe Award.

K.J. Yesudas is a famous musician from Kerala. He is known for his work in Indian film music. He has won several awards, including four National Film Awards and six Filmfare Awards.

Shreya Ghoshal is a famous musician from West Bengal. She is known for her work in Indian film music. She has won several awards, including five National Film Awards and six Filmfare Awards.

Lou Majaw is the only musician on the list who is from Meghalaya. He is also the only musician on the list who has been awarded the Meghalaya State Award for Music. Therefore, he is the correct answer to the question.