I'm so sorry for your loss. I lost my dad earlier this year as well. He always loved Elton John and The Beatles. He was completely tone-deaf, and had no sense of timing or rhythm, but he'd attempt to sing Roxanne by The Police as loud as he could when it came on. Didn't care one bit if he was off-key, his goal was to entertain those around him, and he often succeeded at it.
If you ever wanna talk, feel free to PM me.
This one's for you, dad.