Update README.md

Add initial Dataset Card info

README.md

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----
-license: mit
----
+---
+license: mit
+language:
+- en
+pretty_name: MelodyMaster V1 Training Dataset
+task_categories:
+- text-to-audio
+- audio-classification
+tags:
+- audio
+- music
+- music-generation
+- text-to-music
+size_categories:
+- n<1K
+---
+
+# MelodyMaster V1 Training Dataset
+
+This dataset contains music-text pairs for fine-tuning MelodyMaster V1, an AI music generation model. Based on MusicCaps dataset.
+
+## Dataset Description
+
+### Data Format
+- File Type: CSV (Comma Separated Values)
+- Contains music-text pairs for fine-tuning
+
+### Data Structure
+```csv
+youtube_id,start_s,end_s,caption
+```
+
+- `youtube_id`: Identifier for the audio source
+- `start_s`: Start time in seconds
+- `end_s`: End time in seconds
+- `caption`: Text description of the music
+
+### Source
+Derived from Google's MusicCaps dataset, curated specifically for MelodyMaster V1 training.