A few songs are also influenced by dance-based genres; the "feisty" "Rules" is laced with new wave and "Ready for the Good Times" is inspired by disco music. The power ballad "Underneath Your Clothes" has Shakira delivering "racked" vocals and features brass instrumentation influenced by English rock band The Beatles. It contains a melody similar to the one in "Eternal Flame", a 1989 song by American all-female band The Bangles. Similarly, the tune of "The One", another power ballad on the album, is similar to that of "Michelle", a 1965 song by The Beatles. "Fool" and "Poem to a Horse" are more directly influenced by rock music. The former received comparisons to the work of Alanis Morissette while the latter also displays indie elements and contains instrumentation from a soul music-styled horn section and guitar riffs similar to the one present in songs by American grunge band Nirvana. "Laundry Service" also contains four Spanish tracks: "Que Me Quedes Tú" ("That You Remain With Me"), "Te Dejo Madrid" ("I Leave You Madrid"), "Suerte" ("Luck") and "Te Aviso, Te Anuncio (Tango)" ("I'm Warning You, I'm Announcing to You"); the latter two are Spanish translations of "Whenever, Wherever" and "Objection (Tango)", respectively.