An organist is deal to accompany the hymns, but many are not happy playing more modern music for solos and special songs. So, we bring our own professionally recorded accompaniments (backing tracks), and a discreet Bose speaker. This has exceptional sound quality and does not require access to a power socket. So, if there is no organist available or the service congregation might be small, we can also play accompaniments for the hymns, so people can sing along.