Answer:  In 1965 the Righteous Brothers' "Unchained Melody" peaked at #4 on the Top 40.  With the release of the movie soundtrack for "Ghost", the song was re-released in 1990, and peaked at #13 in its original version.  Because 45 rpms where being pulled from record stores and were no longer generally available, the Righteous Brothers re-recorded and released a new version as a cassette single.  This new version peaked at #19 in the same year.

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