The oldest evidence of Andalusian Arabic utterances can be dated from the 10th and 11th century, in isolated quotes, both in prose and stanzaic Classical Andalusi poems ("muwashahat"), and then, from the 11th century on, in stanzaic dialectal poems ("zajal") and dialectal proverb collections, while its last documents are a few business records and one letter written at the beginning of the 17th century in Valencia. Andalusian Arabic is still used in Andalusian classical music and has significantly influenced the dialects of such towns as Sfax in Tunisia, Tétouan and Tangier in Morocco, Nedroma, Tlemcen, Blida, and Cherchell in Algeria, and Alexandria in Egypt. Andalusian Arabic also influenced Mozarabic, Spanish (particularly Andalusian), Ladino, Catalan-Valencian-Balearic, Portuguese, Classical Arabic and Moroccan, Tunisian, Egyptian, Hassani and Algerian Arabics.