Nothing captures the agony of love, loss, hope and redemption like the song form known across all of Latin America: the bolero.Last December, UNESCO declared the bolero "an intangible cultural heritage of humanity" and "an indispensable part of the Latin American sentimental song." And given that Valentine's Day is coming up, Felix Contreras and Anamaria Sayre did something special this week, in honor of this news: they asked some of their favorite artists and show listeners to share their most-loved boleros, and break down exactly what makes them so special. Join Felix and Ana as they laugh, cry and sing a little to the love songs of the ages.And be sure to check out the playlists we made for this episode, feature Ana and Felix's picks, as well as the selections from featured artists and listeners, on Spotify and Apple Music.Audio for this episode of Alt.Latino was edited and mixed by Joaquin Cotler. Hazel Cills is the podcast editor and digital editor for Alt.Latino and our project manager is Grace Chung. NPR Music's executive producer is Suraya Mohamed. Our VP of Music and Visuals is Keith Jenkins.