GEEEZ OHHHHH MAN!!!!! Look if I'm paying good money on a cruise I expect a decent musical act.  That rendention of RESPECT.., was nothing but DISRESPECT to the song itself.  
Sorry, but sometimes I hear so called pro musician's but can't understand how some continue to book gigs.  Maybe this couple is acceptable to some here.., but IMO I would complain the cruise company if this was the musical act on a cruise I paid good money for.  I know sometimes we accept that a performance on a cruise might be mediocre, but these two IMO don't even reach mediocre.....
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