Maiden Voyage was my second Herbie Hancock album, Empyrean Isles being the first. I got both circa my junior/senior years of high school. This would have been very early 1980s. I also had The Real Book by this time, and while I was no expert then - nor now, for that matter - my sense was that "Dolphin Dance" was one of Herbie's most well-known tunes, next to "Chameleon" and, a year or two later, "Rockit."