Jio officially doesn’t provide api for his saavan but JioSaavnAPI this might help you.
I found this web api requestor from above web, You can Integrate it to your app. You can use my last api guides to integrate this. This will be the challenge for you to create apps using this api.
This allows you highly features in music streaming apps.
Surprise
https://apg-saavn-api.herokuapp.com/result/?q=vandemataram&lyrics=true
This link will make your work easier 
Apps made with this api will be listed here -
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