This is posted on behalf of @Thrup'ny Bit , who's having a difficult time at the moment. Welcome to PMW#11. As in previous months, the idea is for you to put down a rhythm track, compose a melody, play something different/solo in the middle, then return to the melody. All straightforward enough. Or is it? The backing track and the chord sheet are below. It probably won't take you long to work out that the first 8-bar section is in D minor, but then the track 'modulates' to another key. To put it another way, the tonal centre shifts, meaning it's not in D minor any more, as the arpeggios suggest. I'll leave it to you to decide what the second key is. When you've worked it out, please keep it to yourself until everyone has had a chance to think this through. I look forward to hearing your takes.