0 12.037314720727547d0 12.287314720727547d0
 12.537314720727547d0 12.790429835847638d0 13.060025984954574d0
 13.352929835847638d0 13.662314720727547d0 13.974814720727547d0
 14.287314720727547d0 14.599814720727547d0 14.912314720727547d0
 15.224814720727547d0 15.537314720727547d0 15.849814720727547d0)
<span class="prompt">SCRATCH&gt;</span> (<span style="color: #8deeee;">loop</span> for beats below 20 by 0.5 collect (spb-at *tenv1* beats))
(1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0d0 1.0