I don’t know much about the band called Dire Straits, nor much about its leader, Mark Knopfler, but the song, Sultans of Swing is certainly one of the best things to emerge in 1979, at least to my ears.
Here’s a version to revive your memory:
The lyrics were inspired by a performance of a jazz band playing in the corner of an almost empty pub in Deptford, South London. At the end of their performance, the lead singer announced their name, the Sultans of Swing; Knopfler found the contrast between the group’s dowdy appearance and surroundings and their grandiose name amusing.
The song is set in common time, with a tempo of 149 beats per minute. It is in the key of D minor with Knopfler’s vocal range spanning G2 to D4. It uses a chord progression of Dm–C–B♭–A for the verses, and F–C–B♭ for the choruses.The riff uses of triads, particularly second inversions. The song employs the Andalusian cadence or diatonic phrygian tetrachord. All the chords are compatible with a D natural minor scale, except for the A major triad, which suggests a D harmonic minor scale. Knopfler used similar triads on “Lady Writer”.