diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua
index 003ca4958..ab35de472 100644
--- a/mods/ENTITIES/mcl_mobs/api.lua
+++ b/mods/ENTITIES/mcl_mobs/api.lua
@@ -107,11 +107,15 @@ local mob_sound = function(self, sound, is_opinion, fixed_pitch)
 		end
 		local pitch
 		if not fixed_pitch then
+			local base_pitch = self.sounds.base_pitch
+			if not base_pitch then
+				base_pitch = 1
+			end
 			if self.child then
-				-- Children have high pitch
-				pitch = 1.5
+				-- Children have higher pitch
+				pitch = base_pitch * 1.5
 			else
-				pitch = 1.0
+				pitch = base_pitch
 			end
 			-- randomize the pitch a bit
 			pitch = pitch + math.random(-10, 10) * 0.005
diff --git a/mods/ENTITIES/mcl_mobs/api.txt b/mods/ENTITIES/mcl_mobs/api.txt
index 10b214127..f38d8ef16 100644
--- a/mods/ENTITIES/mcl_mobs/api.txt
+++ b/mods/ENTITIES/mcl_mobs/api.txt
@@ -131,6 +131,7 @@ functions needed for the mob to work properly which contains the following:
    'makes_footstep_sound' when true you can hear mobs walking.
    'sounds'               this is a table with sounds of the mob
       'distance'          maximum distance sounds can be heard, default is 10.
+      'base_pitch'        base pitch to use adult mobs, default is 1.0 (MCL2 extension)
       'random'            played randomly from time to time.
                           also played for overfeeding animal.
       'war_cry'           what you hear when mob starts to attack player. (currently disabled)
@@ -142,6 +143,9 @@ functions needed for the mob to work properly which contains the following:
       'fuse'              sound played when mob explode timer starts.
       'explode'           sound played when mob explodes.
 
+      Note: For all sounds except fuse and explode, the pitch is slightly randomized from the base pitch
+      The pitch of children is 50% higher.
+
    'drops'     table of items that are dropped when mob is killed, fields are:
       'name'   name of item to drop.
       'chance' chance of drop, 1 for always, 2 for 1-in-2 chance etc.
diff --git a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
index da52d3bcf..63a15932a 100644
--- a/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
+++ b/mods/ENTITIES/mobs_mc/slime+magma_cube.lua
@@ -114,6 +114,7 @@ local slime_big = {
 mobs:register_mob("mobs_mc:slime_big", slime_big)
 
 local slime_small = table.copy(slime_big)
+slime_small.sounds.base_pitch = 1.15
 slime_small.hp_min = 4
 slime_small.hp_max = 4
 slime_small.collisionbox = {-0.51, -0.01, -0.51, 0.51, 1.00, 0.51}
@@ -128,6 +129,7 @@ slime_small.on_die = spawn_children_on_die("mobs_mc:slime_tiny", 4, 0.6, 1.0)
 mobs:register_mob("mobs_mc:slime_small", slime_small)
 
 local slime_tiny = table.copy(slime_big)
+slime_tiny.sounds.base_pitch = 1.3
 slime_tiny.hp_min = 1
 slime_tiny.hp_max = 1
 slime_tiny.collisionbox = {-0.2505, -0.01, -0.2505, 0.2505, 0.50, 0.2505}
@@ -239,6 +241,7 @@ mobs:register_mob("mobs_mc:magma_cube_small", magma_cube_small)
 local magma_cube_tiny = table.copy(magma_cube_big)
 magma_cube_tiny.sounds.jump = "mobs_mc_magma_cube_small"
 magma_cube_tiny.sounds.death = "mobs_mc_magma_cube_small"
+magma_cube_tiny.sounds.base_pitch = 1.25
 magma_cube_tiny.hp_min = 1
 magma_cube_tiny.hp_max = 1
 magma_cube_tiny.collisionbox = {-0.2505, -0.01, -0.2505, 0.2505, 0.50, 0.2505}