It's also worth noting that a typical audiogram only shows a limited frequency band, mainly the range of audible speech. For those who work with music, it might be worth asking your audiologist if they can do full range tests.
I just had an audiologist exam at end of August, and had the extended high end assessment done in addition to the normal one. See attached merged graphs.
I'm 52, and she said that my curves were normal for my age*, although i do have slightly better than average/normal/expected between 8k-10k. Slight decrease in sensitivity for my left ear (X's) as compared to right (O's). This doesn't surprise me, as I have another hobby besides concerts/live music which can also be hard on the ears: scuba diving. And while it has (like live music) given me many amazing experiences and memories, it has also given me more than a few ear infections--more often in the left than the right (although I've never had any problems equalizing either ear, knock on wood). I think that structurally my left ear canal/eustachian tube is narrower than right, which plays a role in causation--I have to be very diligent to flush and treat my ears after each dive, otherwise by day 3, I'll have otitis media. Which is not good when I'm on a 9- or 12-day diving trip! Also, I grew up in the south and hunted/fired guns quite a bit in my youth, sans hearing protection, so there's that...
(*Note that 'hearing loss' starts normally by the early 20s, which is the age that basically everyone loses the ability to hear the 18k-20k range, due simply to what happens structurally to the ear as we age. And the drop-off continues moving into lower frequencies as age increases, which is why my audiogram looks like a LPF has been applied at 10k, and also shows <null> values above 14k.)
As for earplugs: I currently use the Eargasms and Etymotics, but have a slight preference for the fit of the former. I just had full silicon molds made ($50), but have not yet pulled the trigger on full customs yet--still exploring my options here (e.g. MEE vs TLS)