Welcome, @piyushgoel997 
and thank you for introducing yourself! Nice to meet you
I am Anita, from the Netherlands. I joined this community only a few weeks ago, to list my new CD album. I am a music composer (pop - contemporary jazz) and I sing, play the piano/keyboard and the flute. To write down my scores, I use the program Sibelius. I have my own independent record label and I produce my music in my own home studio, using Sonar. Also, I am a graphics designer and a web developer. Oh, and I used to be a lawyer, and I still help my husband with legal and personnel affairs and some other things in his business.
I discovered Music Brainz because I found out that my singing teacher from United States had listed her CD here! I had never joined an internet community before, so everything was new for me! But I can tell you @piyushgoel997, that this is a very friendly and competent experts group, and they all will help you out when you experience difficulties with the site! Just ask in the forum, if you have a problem 
I’m sure there are a lot of instrumentals in the database already, but, as we cannot set a type for them (yet), they do not show up when people are looking for them 
You might be interested in this forum thread where we are discussing how to let instrumentals show up in the database, when people search for them
Oh and that’s just wonderful, that you know python and other script languages! I am sure that you can contribute in a great way, to help this database becoming the most complete Music Encyclopedia of the world!