The article text provided does not contain any actual content from the piece — only site navigation elements (menu links such as "Music," "Film," "Travel," "Art," "News") and a stray "Cover Story | Yard Act" tag, with no body text about Glen Campbell or the 1974 lyric referenced in the headline. As a result, there is no substantive information available to summarise about what the lyric was, why Campbell reportedly saw it as defining his legacy, or the context in which he made that remark.

To provide an accurate summary, the full article text would need to be supplied, as the current extract appears to be a failed or incomplete scrape of the Far Out Magazine page rather than the actual story content.