I thought it was bad enough to be compelled to act as pallbearer (I know that that's supposed to be an honor, but I've been asked to do it three times now, the first time for a great-aunt, next for for my paternal grandmother, and most recently for my aunt, and it's a burden, both physically and emotionally [sorry if that sounds unfeeling, but it's the truth]), but being asked to sing or recite a text at a loved one's funeral would be inestimably more difficult.
I intend to have a very simple funeral, having myself cremated and put into the ground with a minimum of ceremony, with formal dress and rites completely optional to those attending.