In 1971, CBS released a recording with the Philadelphia Orchestra conducted by Eugene Ormandy, also featuring the Mormon Tabernacle Choir, the Valley Forge Military Academy band and real artillery shots. British rock drummer Cozy Powell sampled the overture at the end of the track "Over The Top" in his eponymous 1979 studio album. The first digital recording occurred in 1979 by Telarc of the Cincinnati Symphony Orchestra. High-definition cannon shots using full-sized 19th century military cannons were also recorded. In addition to becoming Telarc's best-selling record and establishing them as a company, the record soon became a popular and well-known method for testing hifi record-playing equipment and related setups. Only the best and most fine-tuned allowed the cannon shots to be played properly (an accompanying warning for users not to destroy their audio equipment was included with the record). In 1989, the Swingle Singers recorded an a cappella version of the overture as part of an album whose title is 1812.