Where does “drumbeat” come from?

I can't write this etymology because the chain provided only contains English and cycles through the same two words (beat/beatnik) without showing any language progression or origin point. A valid etymology requires tracing back through different languages to an ultimate source, which this chain doesn't provide. Could you supply the actual etymological chain showing the progression through earlier languages?

drumbeat (English): The beating of a drum; The sound of a beating...

Definitions

  1. The beating of a drum; The sound of a beating...

Ancestry of “drumbeat”, step by step

drumbeat traces back through two separate lines of ancestry.

via English drum

StepLanguageWordMeaning
1EnglishdrumA percussive musical instrument spanned with a...
2EnglishdrumsladeA drum; A drummer
3Middle Dutchtrommelslachdrumbeat
4Middle Dutchslachbeat
5Old Dutchslagsetback, misfortune
6Proto-West Germanicslagiblow, strike
7Swedishslaggslag metallurgical waste material
8Low Germanslagge
9Middle Low Germanslagge
10Middle Low Germanslānto hit, strike
11Old Saxonslāhanto hit
12Proto-West Germanicslahanto hit, to strike; to kill
13Proto-Germanicslahanąto hit, to strike; to kill
14Proto-Indo-Europeanslak-to hit; strike; to hit, strike, throw; to hit,...

via English beat

StepLanguageWordMeaning
1EnglishbeatA stroke; a blow; A pulsation or throb; A pulse...
2Middle EnglishbetenTo beat; to repeatedly strike or hit
3Old Englishbēatanto thrash, beat; to beat, pound, strike, lash,...
4Proto-West Germanicbautanto beat
5Proto-Germanicbautanąto beat, push
6Proto-Indo-Europeanbʰewd-to hit, strike; to beat, push; to strike, push,...
7Proto-Indo-Europeanbʰew-to grow, swell; to swell, wax, grow; to blow; to...
Every word from Proto-Indo-European slak-
drumbeat — Etymology, Origin & Word History | Etymology Explorer