Record Dragon: The three versions across the top row all show the remixed version.
Delta 47401 2/15/1963 Tamla 54077A Marvelettes, The Locking Up My Heart 2:24 DM V-019315 P-4809 ------ ------ Also released 3/18/63 with Motown master number listed as DM V-022307 with RCA matrix P4KM-4609-1.
Missed out on the opportunity to enjoy what seems like an 'audience' with Lamont Dozier over in Liverpool the other night (my friend John was unable to contact me in time - teeth have been gnashed). Stuart Levine was MC'ing and John tells me that among the anecdotes was one regarding "Locking Up My Heart". The Marvelettes it seems had taken a stab at it that morning and as that expression implies, the results had left something to be desired.
As Lamont related it, he told the girls to go and grab some lunch, while he 'worked on the track' they'd cut, as they had 'some machinery' that could make it sound better . Meantime, he called the Andantes in and they cut the song. When the girls returned, Lamont played back the Andantes' track. 'Oh, that's much better now', said the girls delightedly ... and I gather that is the track that went out.