# **Instructions: Vocal Stem Quality Comparison Task**

You will be comparing two AI-generated instrumental stems of a reference mixed track. Your task is to evaluate both versions and select the one with better overall audio quality and accuracy.

## **Key Factors to Consider:**
   - Which version has fewer distortions or unwanted artifacts?
   - Which version has clearer separated instrumentals?
   - In which version are the lyrics more easily understood?
   - Which version has more natural-sounding instrumentals with fewer artificial artifacts?

## **How to Complete the Task:**
1. **Listen to the Reference Clip** – The full track with both vocals and instrumentals is labeled under "Reference Mixture". This is the track you should compare the instrumental stems against.

2. **Listen to the Insturmental Stem Clips** – Two audio players, labeled **Stem A** and **Stem B**, will each contain isolated instrumentals of the reference clip. You don't need to listen to the entire clip if one is clearly better than the other, but make sure you listen to enough to make an informed decision.

2. **Compare Quality** – Focus on comparing the audio clarity and quality between the two versions.

3. **Select Your Preference** – Choose the version that sounds better overall by selecting **A** or **B**.

4. **Submit Your Decision** – Once you've made your choice, submit your decision to move to the next comparison.

## **Additional Notes:**
- Both clips isolate an instrument extracted from the reference track
- Each version may have different strengths, but always select the one you think is best overall
- Comments are only needed if there's a technical issue (e.g., audio not loading or missing)
- Feel free to replay sections if needed, but try to decide within a reasonable time