Rádio Verdes Mares, known in Ceará as Verdinha, created this jingle for broadcasts involving Guarany de Sobral and Guarani de Juazeiro, two clubs that share red-and-black colours and similar names, which explains the combined title. It has been associated with their matches since the 1970s, when station jingles introduced teams before coverage. Later versions were shortened, and the opening effect heard here was removed, probably because the full jingles ran long. Complete Verdinha jingles are now rare online, with surviving examples mainly for Ceará, Ferroviário and Fortaleza, making this restored version a valuable record for supporters.