Table 2. MEE, excerpt from the self-created intake questionnaire.

Survey Theme	Question summaries	Scoring
Music lessons	Does the child receive music lessons	Q [0,1]
	private at school both
	Type of music lessons individual group	Q [0,1]
	length 15–30 min 30–45 min 45–60 min 60 + min (please specify)	Q [0,1]
	which instrument does your child play (please specify)	D
Music preferences	which genre/sort of music (please specify)	D
Music exposure	when does the child listen/sing at home social with peers during homework during play	Q [0,1] [0,1] [0,1] [0,1] [0,1]
	average length of exposure per ‘session’ (please specify)	D
Music activity	child puts on music him/herself	Q [0,1]
	eength of listening	D
Parents use of music	exposing the child to music: at home concerts during tasks / homework / play	Q [0–5] [0–5] [0–5]
	Mother / Father is musician active amateur musician none	Q [0,1]

Excerpt of intake questionnaire on quantification of a musically enriched environment. D = Descriptive: information was filled into the questionnaire by the parent or legal representative, Q = Quantitative: groupings were made e.g. time practised or time exposure to music for quantification, being scored with 0 = No and 1 = Yes. Additionally, exposing the child to music was assessed with a Likert scale (0–5); 0 little to no exposure, 5 a lot of exposure, amounting to a total of 25 points.