Sam Milazzo pointed this video out to me. It's the original opening titles for "Supēsu Ozu no Bōken" or "The Space Adventures of Oz," which was condensed to a movie called "The Wonderful Galaxy of Oz." (It may be in with the $1 DVDs at Wal-Mart.)
According to the show's Wikipedia page, the song is called "To Dream an Adventure." Also on Wikipedia is a complete episode list.
This is actually better than the opening titles they used in the movie version, though the English song there IS quite catchy... "We're off... to Oz! That magical galaxy..."
Oz in the News 5.18.13 - Local collector to auction rare Judy Garland Oz dress Local Hollywood memorabilia collector, Barry Barsamian, has decided to sell his iconic Judy Garland ...