Generate Orchestral Variations Based on Song Structure Analysis

Description: Allow users to submit an existing generated song (with vocals or singing) and have Songer analyze its musical structure, then use that analysis to generate a new orchestral version. This would create a distinct orchestral arrangement that shares the harmonic and structural foundation of the original without requiring direct editing or re-prompting from scratch. Use Case: This feature would let creators expand their catalog by transforming vocal-based songs into orchestral versions, maintaining thematic consistency while offering a new arrangement suited to different moods or contexts. Note: This is about structural analysis and derivative generation, not direct editing of the original track.