Goodness me, thank you for pointing this out. The songs are back as of 6.8 and I thought they finally kicked the bucket after 6.2. Below is a link for the 6.9 release song, it is – as you say – really nice:
Yeah, the most time consuming thing for me is if a PostreSQL upgrade is required on the machine. Other than that, sysupgrade, package upgrades, and a quick reboot seem to be the norm.
https://www.openbsd.org/lyrics.html#69