Thank you my dear friends,
Thanks spanishguitarmusic and lagartija,
This dance is very specific and while I play this piece I think about men and girls that dance at this music or spider's intention that are reflect at many part of this dance.
Yes, for dancing it will be useful to have 8 legs, for playing sometime 6 fingers.
Thanks a lot! Mertz's Bardic sound (Bardenklange) pieces are his great gift for guitar world (although with piano on his mind).
I also played Capriccio from this opus and find it very useful but this Tarantelle is something special.