I need to understand why parts of my tracks are suddenly not producing sound: during playback and monitoring while recording, they become suddenly silent despite the audio showing visually. I've included a screenshot- the issue occurs directly to the right of the playhead, on the "high doo" and "mid doo" tracks- notice they are lighter in color but not grayed out (muted) entirely. Please teach me how to fix this, and control it when it happens in the future. Thanks in advance- wasn't sure how to search this.