A little bit funny, but pretty odd. My originals band has been working on a song with a bossa nova feel, we've played it live so far twice. I had pointed out that I'm playing a stereotypical bass intro to "The Girl From Ipanema" over and over again. This week the lead singer wanted to do some completely different music for the lyrics, so at rehearsal she asked for a typical tango beat, so we did that. We then worked on another song. Then she says "Now play that girl from Ipanema song again". I start, and after a few measures the flute player asks me if I'm sure that's how it went before because it sounds different. I say I'm sure that's how it went, though we've done it in a few different keys. So I try a different key. Again, people are looking at me confused, like something is wrong, but I'm quite sure I'm playing the same simple bossa nova pattern I always have. After maybe three tries the lead singer finally says "No, don't play it like we've done it before, play it like we did earlier today". At that point it dawns on me. "So... you want me to play a tango and not a bossa?" "Yes!" I guess to them it was still "that girl from Ipanema song", even though any trace of "The Girl From Ipanema" was gone. I thought they wanted to reuse that accompaniament for different lyrics.