This is what we found on Wikipedia regarding the Jose Gonzalez:

Indie folk (also called alternative folk) is an alternative genre of music that arose in the 1990s among musicians from indie rock scenes influenced by folk music. Indie folk hybridizes the acoustic guitar melodies of traditional folk music with contemporary instrumentation. The lyrical style commonly includes raw emotional experiences, social commentary, and an introspective lens. The genre blends the ethos and experimental nature of indie music with the storytelling of folk music. Instruments frequently used in the genre include guitars, banjos, mandolins, and ukuleles.