Sorry for the delay in responding, but I've been on holiday. Currently, the Tenerife Film Orchestra and Choir's website is under construction.
That word you mentioned is "Fimucite" and is a sort of mini-festival featuring the orchestra. This year's dates are, apparently, 9-14 of July, so the best I can offer is to wait till then.
Fimucite has its own website (fimucite.com), but it doesn't yet have any info on actual concert dates or tickets.
I suggest you keep an eye on this site nearer to July.