diff --git a/modular_ss220/text_to_speech/code/tts_seed.dm b/modular_ss220/text_to_speech/code/tts_seed.dm
index 9118207d2776..1110b2ea1b77 100644
--- a/modular_ss220/text_to_speech/code/tts_seed.dm
+++ b/modular_ss220/text_to_speech/code/tts_seed.dm
@@ -60,3 +60,78 @@
 	set desc = "Express yourself!"
 	set category = "Subsystems"
 	change_voice()
+
+/**
+* Surgery to change the voice of TTS.
+* Below are the operations for organics and IPC.
+*/
+
+// Surgery for organics
+/datum/surgery/vocal_cords_surgery
+	name = "Vocal Cords Tuning Surgery"
+	steps = list(
+		/datum/surgery_step/generic/cut_open,
+		/datum/surgery_step/generic/retract_skin,
+		/datum/surgery_step/tune_vocal_cords,
+		/datum/surgery_step/generic/cauterize
+		)
+	possible_locs = list(BODY_ZONE_PRECISE_MOUTH)
+
+
+/datum/surgery/vocal_cords_surgery/can_start(mob/user, mob/living/carbon/target)
+	if(ishuman(target))
+		var/mob/living/carbon/human/H = target
+		if(!H.check_has_mouth())
+			return FALSE
+		return TRUE
+
+/datum/surgery_step/tune_vocal_cords
+	name = "tune vocal cords"
+	allowed_tools = list(/obj/item/scalpel = 100, /obj/item/kitchen/knife = 50, /obj/item/wirecutters = 35)
+	time = 6 SECONDS
+	var/target_vocal = "vocal cords"
+
+/datum/surgery_step/tune_vocal_cords/begin_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool, datum/surgery/surgery)
+	user.visible_message("[user] begins to tune [target]'s vocals.", span_notice("You begin to tune [target]'s vocals..."))
+	..()
+
+/datum/surgery_step/tune_vocal_cords/end_step(mob/user, mob/living/carbon/human/target, target_zone, obj/item/tool, datum/surgery/surgery)
+	target.change_voice(user, TRUE)
+	user.visible_message("[user] tunes [target]'s vocals completely!", span_notice("You tune [target]'s vocals completely."))
+	return TRUE
+
+/datum/surgery_step/tune_vocal_cords/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool, datum/surgery/surgery)
+	var/obj/item/organ/external/head/head = target.get_organ(target_zone)
+	user.visible_message(span_warning("[user]'s hand slips, tearing [target_vocal] in [target]'s throat with [tool]!"), \
+						span_warning("Your hand slips, tearing [target_vocal] in [target]'s throat with [tool]!"))
+	target.tts_seed = SStts220.get_random_seed(target)
+	target.apply_damage(10, BRUTE, head, sharp = TRUE)
+	return FALSE
+
+// Surgery for IPC
+/datum/surgery/vocal_cords_surgery/ipc
+	name = "Microphone Setup Operation"
+	steps = list(
+		/datum/surgery_step/robotics/external/unscrew_hatch,
+		/datum/surgery_step/robotics/external/open_hatch,
+		/datum/surgery_step/tune_vocal_cords/ipc,
+		/datum/surgery_step/robotics/external/close_hatch
+		)
+	requires_organic_bodypart = FALSE
+
+/datum/surgery/vocal_cords_surgery/ipc/can_start(mob/user, mob/living/carbon/target)
+	if(!ishuman(target))
+		return FALSE
+
+	var/mob/living/carbon/human/H = target
+	var/obj/item/organ/external/head/affected = H.get_organ(user.zone_selected)
+	if(!affected)
+		return FALSE
+	if(!affected.is_robotic())
+		return FALSE
+	return TRUE
+
+/datum/surgery_step/tune_vocal_cords/ipc
+	name = "microphone setup"
+	allowed_tools = list(/obj/item/multitool = 100, /obj/item/screwdriver = 55, /obj/item/scalpel = 25, /obj/item/kitchen/knife = 20)
+	target_vocal = "microphone"