He wrote the songs extemporaneously, often by playing guitar and improvising riffs. There are no salaried ministers and they seldom use prepared notes, but rather preach extemporaneously. In the late 1960s, Antin began performing extemporaneously, improvising "talk poems" at readings and exhibitions. There are several oral phosphate formulations which are prepared extemporaneously. Creighton lectured twice a week at the university, preparing extensively, but lecturing extemporaneously. The elision was to be filled extemporaneously in performance, presumably. The best tamadas are extemporaneously poets. Unlike the sindil, they are not performed extemporaneously. Butera responded extemporaneously, "The Witnesses", and the name stuck. Ships were assigned places in these orders by the commander, sometimes temporarily or even extemporaneously. Embroidery and drawn work are done extemporaneously without any designs.