"En las Horas" is a significant Venezuelan waltz by Laudelino Mejías, composed in 1945. Unlike the more famous "Conticinio," this work showcases Mejías' sophisticated approach to the waltz form, blending European classical traditions (particularly Verdian and Puccinian operatic influences) with Venezuelan musical elements. The piece features a solemn, melancholic character with bel canto-inspired melodies, structured with an introduction, four waltz sections, and a coda. It represents an important contribution to the Latin American classical repertoire from the mid-20th century.