diff --git a/shared-bindings/audioio/MixerVoice.c b/shared-bindings/audioio/MixerVoice.c
index 2bcafaae01..02f57d4195 100644
--- a/shared-bindings/audioio/MixerVoice.c
+++ b/shared-bindings/audioio/MixerVoice.c
@@ -37,7 +37,7 @@ STATIC mp_obj_t audioio_mixervoice_make_new(const mp_obj_type_t *type, size_t n_
 	audioio_mixervoice_obj_t *self = m_new_obj(audioio_mixervoice_obj_t);
     self->base.type = &audioio_mixervoice_type;
     self->sample = NULL;
-    self->gain = ((1 << 15)-1);
+    self->level = ((1 << 15)-1);
     return MP_OBJ_FROM_PTR(self);
 }
 
@@ -119,35 +119,35 @@ MP_DEFINE_CONST_FUN_OBJ_KW(audioio_mixervoice_stop_obj, 1, audioio_mixervoice_ob
 //|
 //|     gain must be a floating point number between 0 and 1
 //|
-STATIC mp_obj_t audioio_mixervoice_obj_set_gain(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-    enum { ARG_gain };
+STATIC mp_obj_t audioio_mixervoice_obj_set_level(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+    enum { ARG_level };
     static const mp_arg_t allowed_args[] = {
-        { MP_QSTR_gain,     MP_ARG_OBJ | MP_ARG_REQUIRED },
+        { MP_QSTR_level,     MP_ARG_OBJ | MP_ARG_REQUIRED },
     };
     audioio_mixervoice_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
 
 	#if MICROPY_PY_BUILTINS_FLOAT
-	float gain = mp_obj_get_float(args[ARG_gain].u_obj);
+	float level = mp_obj_get_float(args[ARG_level].u_obj);
 	#else
 	#error "floating point not supported"
 	#endif
 
-    if (gain > 1 || gain < 0) {
-        mp_raise_ValueError(translate("gain must be between 0 and 1"));
+    if (level > 1 || level < 0) {
+        mp_raise_ValueError(translate("level must be between 0 and 1"));
     }
 
-    common_hal_audioio_mixervoice_set_gain(self, gain);
+    common_hal_audioio_mixervoice_set_level(self, level);
 
     return mp_const_none;
 }
-MP_DEFINE_CONST_FUN_OBJ_KW(audioio_mixervoice_set_gain_obj, 1, audioio_mixervoice_obj_set_gain);
+MP_DEFINE_CONST_FUN_OBJ_KW(audioio_mixervoice_set_level_obj, 1, audioio_mixervoice_obj_set_level);
 
-const mp_obj_property_t audioio_mixervoice_gain_obj = {
+const mp_obj_property_t audioio_mixervoice_level_obj = {
     .base.type = &mp_type_property,
     .proxy = {(mp_obj_t)&mp_const_none_obj,
-              (mp_obj_t)&audioio_mixervoice_set_gain_obj,
+              (mp_obj_t)&audioio_mixervoice_set_level_obj,
               (mp_obj_t)&mp_const_none_obj},
 };
 
@@ -182,7 +182,7 @@ STATIC const mp_rom_map_elem_t audioio_mixervoice_locals_dict_table[] = {
 
     // Properties
     { MP_ROM_QSTR(MP_QSTR_playing), MP_ROM_PTR(&audioio_mixervoice_playing_obj) },
-    { MP_ROM_QSTR(MP_QSTR_gain), MP_ROM_PTR(&audioio_mixervoice_gain_obj) },
+    { MP_ROM_QSTR(MP_QSTR_level), MP_ROM_PTR(&audioio_mixervoice_level_obj) },
 };
 STATIC MP_DEFINE_CONST_DICT(audioio_mixervoice_locals_dict, audioio_mixervoice_locals_dict_table);
 
diff --git a/shared-bindings/audioio/MixerVoice.h b/shared-bindings/audioio/MixerVoice.h
index 1320773ec4..a67a5ec909 100644
--- a/shared-bindings/audioio/MixerVoice.h
+++ b/shared-bindings/audioio/MixerVoice.h
@@ -21,7 +21,7 @@ void common_hal_audioio_mixervoice_deinit(audioio_mixervoice_obj_t* self);
 void common_hal_audioio_mixervoice_set_parent(audioio_mixervoice_obj_t* self, audioio_mixer_obj_t *parent);
 void common_hal_audioio_mixervoice_play(audioio_mixervoice_obj_t* self, mp_obj_t sample, bool loop);
 void common_hal_audioio_mixervoice_stop(audioio_mixervoice_obj_t* self);
-void common_hal_audioio_mixervoice_set_gain(audioio_mixervoice_obj_t* self, float gain);
+void common_hal_audioio_mixervoice_set_level(audioio_mixervoice_obj_t* self, float gain);
 
 bool common_hal_audioio_mixervoice_get_playing(audioio_mixervoice_obj_t* self);
 
diff --git a/shared-module/audioio/Mixer.c b/shared-module/audioio/Mixer.c
index ea53140abf..dc92ce1daf 100644
--- a/shared-module/audioio/Mixer.c
+++ b/shared-module/audioio/Mixer.c
@@ -309,19 +309,19 @@ audioio_get_buffer_result_t audioio_mixer_get_buffer(audioio_mixer_obj_t* self,
                     sample_value = voice->remaining_buffer[j];
                 }
 
-                // apply the mixer gain
+                // apply the mixer level
             	if (!self->samples_signed) {
 					if (self->bits_per_sample == 8) {
-						sample_value = mult8unsigned(sample_value, voice->gain);
+						sample_value = mult8unsigned(sample_value, voice->level);
 					} else {
-						sample_value = mult16unsigned(sample_value, voice->gain);
+						sample_value = mult16unsigned(sample_value, voice->level);
 					}
 				}
 				else{
 					if (self->bits_per_sample == 8) {
-						sample_value = mult8signed(sample_value, voice->gain);
+						sample_value = mult8signed(sample_value, voice->level);
 					} else {
-						sample_value = mult16signed(sample_value, voice->gain);
+						sample_value = mult16signed(sample_value, voice->level);
 					}
 				}
 
diff --git a/shared-module/audioio/MixerVoice.c b/shared-module/audioio/MixerVoice.c
index 3579d500fd..024460af1a 100644
--- a/shared-module/audioio/MixerVoice.c
+++ b/shared-module/audioio/MixerVoice.c
@@ -18,8 +18,8 @@ void common_hal_audioio_mixervoice_set_parent(audioio_mixervoice_obj_t* self, au
 	self->parent = parent;
 }
 
-void common_hal_audioio_mixervoice_set_gain(audioio_mixervoice_obj_t* self, float gain) {
-	self->gain = gain * ((1 << 15)-1);
+void common_hal_audioio_mixervoice_set_level(audioio_mixervoice_obj_t* self, float level) {
+	self->level = level * ((1 << 15)-1);
 }
 
 void common_hal_audioio_mixervoice_play(audioio_mixervoice_obj_t* self, mp_obj_t sample, bool loop) {
diff --git a/shared-module/audioio/MixerVoice.h b/shared-module/audioio/MixerVoice.h
index 1cf686a381..2811a741a2 100644
--- a/shared-module/audioio/MixerVoice.h
+++ b/shared-module/audioio/MixerVoice.h
@@ -21,7 +21,7 @@ typedef struct {
     bool more_data;
     uint32_t* remaining_buffer;
     uint32_t buffer_length;
-    int16_t gain;
+    int16_t level;
 } audioio_mixervoice_obj_t;