sentences:  The track, originally titled "Heartburn", has been described by the band's singer Gruff Rhys as a country and western song with lyrics that offer "soul advice".Critical reaction to "Fire in My Heart" was generally positive with the "NME" stating that it confirmed the band's position as the best British singles band in "ages and ages" and placing the track at number 25 in their singles of the year chart for 1999.The music video for the song was directed by Jake & Jim and shows Super Furry Animals waiting to leave the planet Mars, having played a concert there.