Complex sentence: In April 2013, the band released music videos for the songs "Hollow", and "Stone", and in September 2013, music videos for "Voices" and "The Devil Put Dinosaurs Here" were released on YouTube to further promote the album.
Split into simpler sentences: In April 2013, the band released music videos for the songs "Hollow", and "Stone". Music videos for "Voices", and "The Devil Put Dinosaurs Here" in September 2013 were released on YouTube to further promote the album.