Where does “rocktronica” come from?

rocktronica (English) comes from English electronica, from English -a, from English have, from English -s, from English ’s, from English Kingstown, from English town, from Middle English toun — on, onto.

Ancestry of “rocktronica”, step by step

rocktronica traces back through two separate lines of ancestry.

via English electronica

StepLanguageWordMeaning
1EnglishelectronicaAny of a wide range of electronic music genres;...
2English-aplural of -um; plural of -on; Marks singular...
3EnglishhaveTo possess, own; To hold, as something at...
4English-sUsed to form regular plurals of nouns; Used to...
5English’s
6EnglishKingstownOS grid ref NY3959
7EnglishtownA settlement; an area with residential districts,...
8Middle Englishtountown
9Middle EnglishendeThe end or finishing of a thing; the terminal...
10Old Englishendeend, limit, border, corner
11Proto-Germanicandiin addition, furthermore, and
12Proto-Indo-Europeanh₂éntiopposite; near; in front
13Proto-Indo-Europeanh₂éntsforehead; front
14Proto-Indo-Europeanh₂ent-face; forehead; front
15Proto-Indo-Europeanh₂en-on, onto

via English Rock

StepLanguageWordMeaning
1EnglishRockfor someone living near a rock or an oak (atter + oke)
2Middle Englishrokmist; vapour; drizzle; smoke; fumes
3Old Frenchrocherock
4Persianرخrook; cheek; face
5Middle Persianlhw'rook, castle
6Sanskritरथchariot, car, especially a two-wheeled...
7Proto-Indo-IranianHrátʰaschariot
8Proto-Indo-EuropeanHrót-h₂-os
9Proto-Indo-EuropeanHret-to roll; wheel; to run, roll
Every word from Proto-Indo-European h₂en-