The last composition Ravel completed in the 1920s, "Boléro", became his most famous. He was commissioned to provide a score for Ida Rubinstein's ballet company, and having been unable to secure the rights to orchestrate Albéniz's "Iberia", he decided on "an experiment in a very special and limited direction... a piece lasting seventeen minutes and consisting wholly of orchestral tissue without music". Ravel continued that the work was "one long, very gradual crescendo. There are no contrasts, and there is practically no invention except the plan and the manner of the execution. The themes are altogether impersonal." He was astonished, and not wholly pleased, that it became a mass success. When one elderly member of the audience at the Opéra shouted "Rubbish!" at the premiere, he remarked, "That old lady got the message!" The work was popularised by the conductor Arturo Toscanini, and has been recorded several hundred times. Ravel commented to Arthur Honegger, one of Les Six, "I've written only one masterpiece – "Boléro". Unfortunately there's no music in it."