BAJAAO has been a boon to the music community in Mumbai {and the rest of the country} with their efficient and well-stocked e-retail website, as well as the offline store in Andheri East.
Bajaao was started off by Ashutosh Pande back in 2005, and ever since, they have only expanded. They have everything that one can possibly imagine – guitars, amplifiers, drums and percussion, cello, violin and even DJ pro and audio equipment. You can buy the stuff off their website, and it will be delivered to you anywhere in India.
You can find more information on their website here.