Just keep thinking about rum and plantains. This Sunday night on “The Lost Chord,” we recollect sunnier times in the Caribbean.

We’ll have music by two composers with Puerto Rican connections: Ernesto Cordero (b. 1946), though born in New York, was raised there; Roberto Sierra (b. 1953) was born there and now teaches at Cornell.

Cordero studied at the Conservatory of Music in Puerto Rico and the Royal Conservatory of Music in Madrid. He did post graduate work in composition in Rome and New York (with Julián Orbón). He also studied guitar under the legendary Regino Sáinz de la Maza (who gave the premiere of Rodrigo’s “Concierto de Aranjuez”) and Alirio Díaz.

Cordero’s music is distinguished by its Caribbean flavor. He has written at least eight concertos to date. We’ll be listening to his “Concierto Festivo” (2003), dedicated to Pepe Romero.

Sierra studied composition in Hamburg with György Ligeti. In 1986, his opera, “El mensajero de plata” (“The Silver Messenger”), was given its premiere at the Interamerican Festival in San Juan. In 1985, Zdenek Macal conducted the first performance of Sierra’s first major orchestral composition, “Jubilo,” with the Puerto Rico Symphony Orchestra. Macal took the work to Carnegie Hall in 1987, with the Milwaukee Symphony Orchestra, effectively kickstarting Sierra’s international career.

Sierra spent three seasons as Milwaukee’s composer-in-residence, from 1989 to 1992. The culmination of his residency was the world premiere of “Tropicalia” (1991). The work falls into three movements: “Foliage” is evocative of a rainforest; “Nocturne” conjures childhood memories of fireflies and “coqui,” Puerto Rican tree frogs; and “Celebration” is full of upbeat, indigenous rhythms.

Put aside thoughts of catastrophic weather. Join me for “Port of Riches,” this Sunday night at 10:00 EDT, on WWFM – The Classical Network and wwfm.org.