diff --git a/tests/tools/test_azure_tts.py b/tests/tools/test_azure_tts.py
index a863c67c..cdc1df7d 100644
--- a/tests/tools/test_azure_tts.py
+++ b/tests/tools/test_azure_tts.py
@@ -6,6 +6,7 @@ construction, and execute() guardrails.
 """
 
 import sys
+import xml.etree.ElementTree as ET
 from pathlib import Path
 
 import pytest
@@ -148,6 +149,20 @@ class TestSSML:
         ssml = t._build_ssml({"text": "Hallo", "locale": "de-DE"}, "de-DE-KatjaNeural")
         assert 'xml:lang="de-DE"' in ssml
 
+    def test_ssml_quotes_in_attributes_remain_well_formed(self):
+        t = AzureTTS()
+        ssml = t._build_ssml(
+            {
+                "text": 'She said "hello" & waved',
+                "locale": 'en-US" data-bad="yes',
+                "rate": '0%" data-bad="yes',
+                "style": 'calm" data-bad="yes',
+            },
+            'en-US-GuyNeural" data-bad="yes',
+        )
+        root = ET.fromstring(ssml)
+        assert all("data-bad" not in element.attrib for element in root.iter())
+
     def test_host_prefers_explicit_endpoint(self, monkeypatch):
         monkeypatch.setenv("AZURE_TTS_ENDPOINT", "https://custom.tts.example.com/")
         assert AzureTTS()._host() == "https://custom.tts.example.com"
@@ -201,6 +216,39 @@ class TestExecute:
         assert captured["headers"]["X-Microsoft-OutputFormat"] == "audio-48khz-192kbitrate-mono-mp3"
         assert b"Hello world" in captured["body"]
 
+    def test_selector_adapts_shared_controls_for_azure(self, azure_env, tmp_path, monkeypatch):
+        import requests
+        from tools.audio.tts_selector import TTSSelector
+
+        captured = {}
+
+        def fake_post(url, headers=None, data=None, timeout=None):
+            captured["body"] = data.decode("utf-8")
+            return _FakeResponse()
+
+        monkeypatch.setattr(requests, "post", fake_post)
+        monkeypatch.setattr(TTSSelector, "_providers", lambda self: [AzureTTS()])
+
+        result = TTSSelector().execute(
+            {
+                "text": "Selector narration",
+                "preferred_provider": "azure",
+                "voice_id": "jenny",
+                "speaking_rate": 1.1,
+                "pitch": 2,
+                "style": 0.8,
+                "output_format": "mp3_44100_128",
+                "output_path": str(tmp_path / "selector.mp3"),
+            }
+        )
+
+        assert result.success
+        assert result.data["selected_tool"] == "azure_tts"
+        assert result.data["voice"] == "en-US-JennyNeural"
+        assert 'rate="+10%"' in captured["body"]
+        assert 'pitch="+2st"' in captured["body"]
+        assert "express-as" not in captured["body"]
+
     def test_wav_output_format(self, azure_env, tmp_path, monkeypatch):
         import requests
 
diff --git a/tools/audio/azure_tts.py b/tools/audio/azure_tts.py
index 6943fed6..220dffc2 100644
--- a/tools/audio/azure_tts.py
+++ b/tools/audio/azure_tts.py
@@ -19,7 +19,7 @@ import os
 import time
 from pathlib import Path
 from typing import Any
-from xml.sax.saxutils import escape
+from xml.sax.saxutils import escape, quoteattr
 
 from tools.base_tool import (
     BaseTool,
@@ -201,23 +201,21 @@ class AzureTTS(BaseTool):
         return self.RECOMMENDED_VOICES.get(voice.lower(), voice)
 
     def _build_ssml(self, inputs: dict[str, Any], voice: str) -> str:
-        locale = inputs.get("locale", "en-US")
-        rate = inputs.get("rate", "0%")
-        pitch = inputs.get("pitch", "0%")
+        locale = str(inputs.get("locale", "en-US"))
+        rate = str(inputs.get("rate", "0%"))
+        pitch = str(inputs.get("pitch", "0%"))
         style = inputs.get("style")
         text = escape(inputs["text"])
 
-        inner = f'<prosody rate="{escape(rate)}" pitch="{escape(pitch)}">{text}</prosody>'
+        inner = f"<prosody rate={quoteattr(rate)} pitch={quoteattr(pitch)}>{text}</prosody>"
         if style:
-            inner = (
-                f'<mstts:express-as style="{escape(style)}">{inner}</mstts:express-as>'
-            )
+            inner = f"<mstts:express-as style={quoteattr(str(style))}>{inner}</mstts:express-as>"
         return (
             f'<speak version="1.0" '
             f'xmlns="http://www.w3.org/2001/10/synthesis" '
             f'xmlns:mstts="https://www.w3.org/2001/mstts" '
-            f'xml:lang="{locale}">'
-            f'<voice name="{voice}">{inner}</voice></speak>'
+            f"xml:lang={quoteattr(locale)}>"
+            f"<voice name={quoteattr(voice)}>{inner}</voice></speak>"
         )
 
     def execute(self, inputs: dict[str, Any]) -> ToolResult:
diff --git a/tools/audio/tts_selector.py b/tools/audio/tts_selector.py
index 5c20cd57..614b4bac 100644
--- a/tools/audio/tts_selector.py
+++ b/tools/audio/tts_selector.py
@@ -188,7 +188,7 @@ class TTSSelector(BaseTool):
         if tool is None:
             return ToolResult(success=False, error="No TTS provider available.")
 
-        result = tool.execute(inputs)
+        result = tool.execute(self._adapt_inputs(tool, inputs))
         if result.success:
             result.data.setdefault("selected_tool", tool.name)
             result.data["selected_provider"] = tool.provider
@@ -202,6 +202,37 @@ class TTSSelector(BaseTool):
             ]
         return result
 
+    @staticmethod
+    def _adapt_inputs(tool: BaseTool, inputs: dict[str, Any]) -> dict[str, Any]:
+        """Translate capability-level controls to provider-native inputs."""
+        adapted = dict(inputs)
+        if tool.name != "azure_tts":
+            return adapted
+
+        if inputs.get("voice_id") and not inputs.get("voice"):
+            adapted["voice"] = inputs["voice_id"]
+
+        speed = inputs.get("speaking_rate", inputs.get("speed"))
+        if speed is not None and "rate" not in inputs:
+            percent = round((float(speed) - 1.0) * 100)
+            adapted["rate"] = f"{percent:+d}%" if percent else "0%"
+
+        pitch = inputs.get("pitch")
+        if isinstance(pitch, (int, float)):
+            adapted["pitch"] = f"{pitch:+g}st" if pitch else "0%"
+
+        # The selector's numeric style is ElevenLabs-specific. Azure's style
+        # is a named express-as value such as "calm" or "newscast".
+        if not isinstance(inputs.get("style"), str):
+            adapted.pop("style", None)
+
+        output_format = str(inputs.get("output_format", ""))
+        if output_format.startswith("mp3"):
+            adapted["output_format"] = "mp3"
+        elif output_format.startswith(("wav", "riff", "pcm")):
+            adapted["output_format"] = "wav"
+        return adapted
+
     def _select_best_tool(
         self,
         inputs: dict[str, Any],