Greetings and salutations from the end of a century! On the second Friday of each month, your host John Vettese takes you on a musical excursion through all musical genres of the 90s — from the rise and fall of grunge to the golden era of hip-hop, the galvanizing energy of big-beat electronica to the raw introspection of modern rock singer-songwriters.

From the hits to the deep cuts, the cassingle b-sides to the music video remixes, think of What’s The Frequency as your monthly 90s mixtape delivered via airwaves instead of C-90 cassette, or a Lollapalooza lineup that’s equal parts curated and interactive. Tune in, make requests, and join the conversation at #WTFXPN!