User picks a calm song (e.g., Bad Bunny's "Efecto"). Toggle RKT: User presses the "Z" button.
Based on the viral 2022 TikTok trend mashup, this feature concept is designed for a music streaming or social media app (like TikTok, Instagram, or Spotify). el_gatito_tuyo_te_perdio_z_efecto_remix
The app identifies the tempo (BPM) and key of a user’s selected melodic song. User picks a calm song (e