The Harmonic structure of Morna is usually based on the circle of fifths. The progression typically starts in the tonic of a key. (The tonic is the first tone of a major or minor scale) then moves to the lower fifth which is the Subdominant, it returns back to the first then the fourth chord is the upper fifth which is the dominant. In Cape Verde they are called “Primeira, Segunda, Terceira '' which means first, second, third. The guitar is strummed in a way called the mãozada, a first note is struck marking the bass, and it is then followed by chords either in arpeggios, rhythmical form or a combination of both.
Morna is a slow dance music that is considered to be the national music of Cape Verde due to its strong association with Cape Verdean identity. Morna songs are traditionally about cruel fate, lost love, or blues carried by melancholic guitars and violins. Morna's vocals are typically quiet and sensitive, with the main vocalist delivering the words in a very expressive manner.
The band is usually small and consists of a guitar called violão that acts as a harmonic support, a cavaquinho that plays the chords rhythmically, a violin and a shaker. The violin plays in a rising and falling manner, the melody is accentuated on the first beat and the last half-beat of the bar, Morna songs can sometimes be without vocals, just instruments and most of the instruments are chordophones. Morna's vocals are typically quiet and sensitive, with the main vocalist delivering the words in a very expressive manner.
The themes include - love, departure, separation, reunion, longing, the ocean, and the motherland
It is uncertain on which Cape Veredean island Morna originated from in the 18th century. Also known as “música rainha” (“queen music”), Morna musical influence can be traced to an ancestral African rhythm called Lundum or Landú which was incorporated with choros (local plaintive songs performed on certain occasions). In the early 18th century, it was performed by women who were brought to the islands as slaves.
Morna music is distinguished by its heartfelt and emotive feel. Morna music is typically described as nostalgic and gloomy, reflecting Cape Verde's cultural influences as well as its history of colonization and servitude.
The traditional form of Morna usually starts with an introduction on a solo instrument, usually the guitar or violin which is generally also the melody as the refrain (Refrain can mean chorus, which means a part of the song that is repeated or recurring). The modern Morna began introducing drum kits, electric guitars and bass guitars from 196.