diff --git a/audio/common/7.0/types.hal b/audio/common/7.0/types.hal
index ed56c73..b14ebd4 100644
--- a/audio/common/7.0/types.hal
+++ b/audio/common/7.0/types.hal
@@ -274,10 +274,21 @@
     uint64_t frameCount;
 };
 
+/**
+ * AudioTag is an additional use case qualifier complementing
+ * AudioUsage and AudioContentType. Tags are set by vendor specific applications
+ * and must be prefixed by "VX_". Vendor must namespace their tag
+ * names to avoid conflicts.
+ */
+typedef string AudioTag;
+
 /** Metadata of a playback track for a StreamOut. */
 struct PlaybackTrackMetadata {
     AudioUsage usage;
     AudioContentType contentType;
+    /** Tags from AudioTrack audio atttributes */
+    vec<AudioTag> tags;
+    AudioChannelMask channelMask;
     /**
      * Positive linear gain applied to the track samples. 0 being muted and 1 is no attenuation,
      * 2 means double amplification...
@@ -294,6 +305,9 @@
 /** Metadata of a record track for a StreamIn. */
 struct RecordTrackMetadata {
     AudioSource source;
+    /** Tags from AudioTrack audio atttributes */
+    vec<AudioTag> tags;
+    AudioChannelMask channelMask;
     /**
      * Positive linear gain applied to the track samples. 0 being muted and 1 is no attenuation,
      * 2 means double amplification...
diff --git a/audio/common/all-versions/default/HidlUtils.h b/audio/common/all-versions/default/HidlUtils.h
index a0bd1bc..d8b7ba4 100644
--- a/audio/common/all-versions/default/HidlUtils.h
+++ b/audio/common/all-versions/default/HidlUtils.h
@@ -77,6 +77,8 @@
 #endif
 
 #if MAJOR_VERSION >= 7
+    static constexpr char sAudioTagSeparator = ';';
+
     static status_t audioChannelMaskFromHal(audio_channel_mask_t halChannelMask, bool isInput,
                                             AudioChannelMask* channelMask);
     static status_t audioChannelMasksFromHal(const std::vector<std::string>& halChannelMasks,
@@ -126,6 +128,7 @@
                                                struct audio_port_config_device_ext* device,
                                                struct audio_port_config_mix_ext* mix,
                                                struct audio_port_config_session_ext* session);
+
 #endif  // MAJOR_VERSION >= 7
 
     // V4 and below have DeviceAddress defined in the 'core' interface.