I like that Clergy was high on that list, too. Must be church musicians marrying pastors?

92% of them do per TFA[1]? Also my experience is that most professional musicians are not married to other professional musicians.

1: Well if you consider that teachers could be music teachers, that still puts an upper bound of 25% or so of all musicians marrying other musicians.

My wife is a professional trumpet player. In the Utah Symphony the vast majority of members have a musical spouse. It is not uncommon for spouses to be in the same orchestra (nepotism anyone? fyi these positions are always filled via audition). What probably skews this data is that while musicians overwhelmingly marry other musicians, this doesn't mean that one or both don't move on to other careers to pay the bills. Also, I'm not a musical spouse.