As a lifelong LP collector I've been guilty of that countless times, only concentrating on one or maybe a couple of tracks and not investigating all the other cuts properly, but I think that's a good thing because I've approached DJ's at places like Great Yarmouth Soul Essence to ask about a track being played only to find I've had the LP for years! But as I say, that's no bad thing because a) it means I've discovered a quality new tune and b) it hasn't cost me anything!!
The best one I ever had in this scenario was a track called 'Hey Big Brother' which I had on a tape that somebody had given me in the 90s, just an absolutely wonderful midtempo 70s tune, but the tape had no track listing and I searched high and low for years trying to find it, buying LPs 'blind' because they had song titles 'Brother' or 'Big Brother' but I had no joy. Then one day I was off work and pulled out a load of LPs just to track and put on the Opus 7 LP from 1979 on Source which I'd bought 12 months earlier at Yarmouth for the stepper 'I Love You' and another track called 'The Way You Move Me' and as I looked at the track listing saw the track 'Hey Big Brother' and I thought no f*cking WAY!!! So on it went, the first bars kicked in and my bloody jaw hit the floor, what a dolt, had my biggest want in the collection for a year without knowing it!! I think that day was the one and only time I've done an actual cartwheel in my living room.
Roger