Do band members increase in age?

I've just wondered because considering this game runs in real time and each musician has an age accurate to a month, whether they will age up over time. However I feel like my bassist for Dirago has been 24y6m for like a year now.
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Short answer - no.
A bit longer answer is that this is not implemented and requires a bit more functionality to calculate changing skill levels and eventually to retire musician from the band.
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