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Taking the verses of Sahrawi poet Lamine Allal, Hassan developed a nine paragraph critical response to the 1976 speech of then Spanish opposition leader and later president of Spain Felipe González at the Sahrawi refugee camps (he compromised Spanish Socialist Workers' Party support to the Sahrawi people until "the final victory"), by using all scales and rhythms of the Haul.
In 1997, he was moved back to Tindouf, where he joined the musical agrupation of the Wilaya of El Aaiun in the Sahrawi refugee camps, as he left the Army.