In 1537 Flecha moved to Sigüenza where he served as maestro di cappella for two years. From 1544 to 1548 he lived in the castle at Arévalo as teacher of the Infantas Maria and Joanna, daughters of Charles V, Holy Roman Emperor (1500-1558).
In 1537 Flecha relocated to Sigüenza, where he functioned as a chapel master for two years. From 1544 to 1548 he resided in the castle at Arévalo, serving as an instructor to the Infantas Maria and Joanna, daughters of Charles V, Holy Roman Emperor (1500-1558).