hough he’s been known to hop on stage with his former bandmates in recent years, former R.E.M. drummer Bill Berry has been largely content to let those occasional musical excursions speak for themselves. This past spring, though, Berry did something far more unusual: he sat for an interview with the new podcast “In Weird Cities.”

Three-quarters of R.E.M. — Peter Buck, Mike Mills and drummer-turned-farmer Bill Berry — reunited onstage tonight in Portland, Ore., at the second of two benefit concerts for Scott McCaughey, the longtime R.E.M. sideman who suffered a stroke in November. See video from the reunion performances here.

Each year from 1988 to 2011, R.E.M. mailed a special holiday single to every dues-paying member of its fan club, a total of 24 singles that featured Christmas songs, covers, live tracks and originals, spread across 7-inch vinyl for the first 10 years, then alternating between CDs, DVDs, vinyl and VHS.

As we noted over the weekend, the former members of R.E.M. seemed to go out of their way to avoid staging a full reunion Saturday night at Peter Buck’s wedding in Portland, Ore., as all four ex-bandmates took the stage to perform at the Wonder Ballroom at one point or another — just never all at once.

There very well could have been a full-fledged R.E.M. reunion in Portland, Ore., on Saturday night as all four members of the defunct college-rock superstars performed after Peter Buck’s wedding. But, by all appearances, they managed to avoid such headlines, just barely, by not actually sharing the stage together.

It’s a nearly unparalleled landmark in the history of ’80s college rock: R.E.M.’s peerless debut album, Murmur, was released on April 12, 1983 — exactly 30 years ago today. Today we celebrate this milestone by looking back at the building blocks of the album we know and love.