Bristol indie electronic trio Elder Island, who produce a kind of lush, soulful ambient electro-pop wrapped up in a retro-futurist aesthetic, bring their Hello Baby Okay Tour to El Rey Theatre this Friday! Beware before entering Elder Island’s world because once you’re in you won’t want to leave. Be prepared to be led down paths from which you can’t come back, to be captivated by sensual, soulful, shapeshifting songs, to encounter lyrics littered with clues. There is magic in Elder Island’s music and perhaps a little witchcraft. Trying to pin the Bristol trio’s sound down is pointless because the usual pop rules don’t apply. Textures matter as much as melodies. Genres bend and blend. Electronics rub shoulders with odd instruments. Katy Sargent sings as though casting a spell.