High pulse is weirdly unusual (7)

I believe the answer is:

offbeat

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'weirdly unusual' is the definition.
'offbeat' can be an answer for 'unusual' (I've seen this in another clue). I'm unsure of the 'weirdly' bit.

'high pulse' is the wordplay.
'high' becomes 'off' (I've seen this in other clues).
'pulse' becomes 'be at' (synonyms).
'off'+'beat'='OFFBEAT'

'is' acts as a link.

Can you help me to learn more?

(Other definitions for offbeat that I've seen before include "Unusual, not ordinary - or rhythmic" , "Strange" , "Odd, unconventional" , "Quirky" , "Kooky" .)

I've seen this clue in The Times.

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