Cross-link to drums/bass/other specialist variants

README.md

@@ -184,6 +184,24 @@ for SDR / ISR / SIR / SAR across all stems.
 
 ---
 
+## Single-stem specialist variants (faster, smaller)
+
+If you only need **one** stem in production, ship a specialist sub-model
+instead of the full 4-bag ensemble. Same per-stem quality, ~160 MB instead
+of ~640 MB, ~2.6× faster on M4 Pro MPS:
+
+| Repo | Stem | Use cases |
+|---|---|---|
+| [`htdemucs-ft-drums-pytorch`](https://huggingface.co/StemSplitio/htdemucs-ft-drums-pytorch) | drums | Drum extraction, beat transcription, sample-pack creation |
+| [`htdemucs-ft-bass-pytorch`](https://huggingface.co/StemSplitio/htdemucs-ft-bass-pytorch) | bass | Bassline transcription, mix rebalancing, sub-bass mastering |
+| [`htdemucs-ft-other-pytorch`](https://huggingface.co/StemSplitio/htdemucs-ft-other-pytorch) | other / instrumental | Karaoke instrumentals (pair with this vocals model), sample-flipping |
+
+This repo (the full bag) remains the best choice when you need vocals plus
+any other stem in a single request — it amortises the inference cost across
+all 4 stems.
+
+---
+
 ## Files in this repo
 
 - [`handler.py`](handler.py) — `EndpointHandler` class HF Inference Endpoints