Based on the provided hint and the examination of 'datacard.md' and 'musiccaps-public.csv', the following potential issues have been identified:

1. **Absence of Data Loading Tutorial in Datacard:**

```json
{
  “issue”: “No data loading tutorial provided in 'datacard.md'”,
  “evidence”: ”The MusicCaps dataset contains **5,521 music examples, each of which is labeled with an English \*aspect list\* and a \*free text caption\* written by musicians**...“, 
  “description”: “The 'datacard.md' lacks a section or tutorial on how to load or use the dataset. Including such a tutorial could significantly ease the process of getting started with the dataset for new users, especially regarding accessing and understanding the structure of 'musiccaps-public.csv'.“
}
```

2. **Unclear Usage of 'ytid', 'start_s', 'end_s' Columns:**

```json
{
  “issue”: “Unclear explanation of 'ytid', 'start_s', 'end_s' columns in 'musiccaps-public.csv'”,
  “evidence”: ”ytid  start_s  end_s  audioset_positive_labels  aspect_list  caption  author_id  is_balanced_subset  is_audioset_eval“, 
  “description”: “The purpose and use of the 'ytid' (YouTube video ID), 'start_s' (start time in seconds), and 'end_s' (end time in seconds) columns in 'musiccaps-public.csv' are not explained in the 'datacard.md'. These columns are crucial for accessing the specific music examples from the AudioSet dataset, and a clear explanation of how to use these columns to access the corresponding music excerpts would enhance the dataset's usability.“
}
```

These issues highlight the importance of comprehensive documentation for datasets, particularly the need for explicit data loading guides and clear explanations of dataset columns to aid in effective usage.