Provide song details such as key, tempo, and chords after generation

Description: Show the musical details of a finished song: the key it’s in, the tempo in BPM, the time signature, and ideally the chord progression. At the moment a generated song gives you the audio and the lyrics, but nothing about its musical structure. Users who want to play along, rearrange a track, write a lead sheet, or build on a song in a DAW have to work those details out themselves using external analysis tools. What users are asking for: Key and tempo displayed alongside each finished song Time signature Chord progression where it can be detected Available on the song’s Details panel or with the download This would be useful for anyone treating Songer output as the starting point for further work rather than a finished product, particularly musicians who want to perform or re-record a song they’ve generated. Related to existing requests around chord sheets and notation, but distinct: this is about surfacing information the system already has rather than generating a score.