calvo-manzano created a didactic technique, known as the arlu technique, which is used in courses at the universidad complutense de madrid (madrid complutense university) and at the rcsm de madrid. many music school and conservatory professors in spain are former students of calvo-manzano, and her foreign students have spread her harp and didactic theories. the method consists of understanding the instrument in more than simply musical terms. her search to equip the harp with a technique that is not only dynamic but also expressive in the application of musical effects with a purist approach, appropriate to the era's tendencies and aesthetics, has dubbed her a true innovator in harp technique. she is recognized as the founder of the modern spanish school of harp. she has also been frequently visited by foreign students who have been attracted by her achievements as a concert harpist and scholar. in many cases, her students pursue their phd under her guidance.