Movies like Aashiqui, Dilwale Dulhania Le Jayenge, Hum Aapke Hain Koun..!, and Roja were purchased as much for their music as for their stories. A Zip file containing the top 100 songs from this decade is essentially a history lesson in Indian pop culture.
For the purists, here is the authoritative list (in no particular order, because ranking 90s songs is impossible) that you should copy-paste into a YouTube playlist creator. Top 100 Hindi Songs Of 90s Zip File