See also: Flamenco Festivals in Spain
One question is whether you want to see flamenco in Seville at its 'best' or at its most 'authentic'. What's the difference? Well, imagine seeing BB King at a huge sports stadium. It may well be the best blues concert you ever see, but is it 'authentic'? On the other hand, a smokey blues bar in the backstreets of New Orleans is likely to have more authentic blues, but it may not be up to the standard of BB King's stadium gig.
'Tablaos' are generally speaking where you'll find a very formal and excellent performance, whereas the flamenco bars will normally be a bit more informal and more 'authentic'.
Read more about Flamenco
If you'd like to visit a flamenco show with someone who can explain a little about it to you, You might want to consider this night tour of Seville, which includes a visit to a flamenco show. Night Tour with Flamenco
Flamenco Tablaos in SevilleSome flamenco venues in Seville call themselves 'flamenco tablaos', some 'flamenco spectacles' and others 'flamenco theaters'. They might differ slightly but these will all be generally formal affairs.
See a list of Flamenco Tablaos in Seville
Flamenco Bars in SevilleMost of the flamenco bars in Seville have quite a relaxed atmosphere, but others are a little more elite. Still, the setting is likely to be much less formal than the tablaos above.
See a list of Flamenco Bars in Seville
Read more about Flamenco.