Pink Floyd came up in 1973 with the release of their album "The Dark Side of the Moon" containing 9 songs arranged such a way they sound seamlessly like a single song. All of the songs from this albums are a huge hits on charts all over the world and they are famous still and getting numbers of airplay on stations.
Track List from The Dark Side of the Moon by Pink Floyd
1. Speak to Me / Breathe in the Air
(Gilmour / Mason / Waters / Wright) - 4:00