Although there are no human vocals/lyrics, I think it's subject matter is audible.
1	Although	although	SCONJ	IN	_	3	mark	3:mark	_
2	there	there	PRON	EX	_	3	expl	3:expl	_
3	are	be	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	advcl	11:advcl:although	_
4	no	no	DET	DT	_	8	det	8:det	_
5	human	human	ADJ	JJ	Degree=Pos	8	amod	8:amod	_
6	vocals	vocal	NOUN	NNS	Number=Plur	8	compound	8:compound	SpaceAfter=No
7	/	/	PUNCT	,	_	8	punct	8:punct	SpaceAfter=No
8	lyrics	lyric	NOUN	NNS	Number=Plur	3	nsubj	3:nsubj	SpaceAfter=No
9	,	,	PUNCT	,	_	11	punct	11:punct	_
10	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	11	nsubj	11:nsubj	_
11	think	think	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	0:root	_
12	it's	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs|Typo=Yes	14	nmod:poss	14:nmod:poss	CorrectForm=its
13	subject	subject	NOUN	NN	Number=Sing	14	compound	14:compound	_
14	matter	matter	NOUN	NN	Number=Sing	16	nsubj	16:nsubj	_
15	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	16:cop	_
16	audible	audible	ADJ	JJ	Degree=Pos	11	ccomp	11:ccomp	SpaceAfter=No
17	.	.	PUNCT	.	_	11	punct	11:punct	_
