Given this starting data, music.tml:

Title
	loonie_-_cronologie_4_remix.xm
	sandras_sweet_sex_seminar.xm
Grassland
	joule-mozarella_filofox.xm
	aa-molec.s3m
	hyo-dum.it

and this patch, music.tml.patch:

-- Add this to the end of the file
add: -
	Added
		patch_me_in.s3m
 
-- Add this between Title and Grassland
add: Title
	Inserted
		patch_me_in.s3m
 
-- Add this to Title
add: Title/-
	beek_ita.it
 
-- Remove a particular song from Title
remove: Title/loonie_-_cronologie_4_remix.xm
 
-- Replace a song
replace: Title/loonie_-_cronologie_4_remix.xm
	Cronologie IV.ogg
 
-- Replace the whole set of title music choices
replace: Title
	Title
		Cronologie IV.ogg
		Sandra's Sweet Sex Seminar.ogg
 
-- Change a token's value(s)
set: Inserted
	value: 42
	text: something

Given two tokens with the same name, you can use something like bodyplan[6] (zero-indexed!) or bodyplan[=felin] in a path as well.