Translation of "Desafinados" in English

Corregía a mis padres cuando cantaban desafinados:

In fact, I even used to correct my parents when they were singing off-key by saying,

El resto de los integrantes eran todos desafinados.

The rest of the members were all out of tune.

Cuando el se sube al escenario a cantar uno de sus desafinados solos, me pongo tan nervioso que me sudan las manos.

When he gets up on stage to sing one of his out-of-tune solos, I get so nervous for him that I get sweaty palms.