Clarinets other than the standard B and A clarinets are sometimes known as harmony clarinets. The composer's instrumentation almost always included paired flutes, oboes, clarinets, bassoons, horns and trumpets. The modern orchestra's woodwind section typically includes&colon; flutes, oboes, clarinets, and bassoons. Cymbals gained popularity, along with more advanced trumpets, clarinets, oboes, flutes, drums, and lutes. Kirk played and collected many musical instruments, mainly multiple saxophones, clarinets and flutes. Single reeds are used on the mouthpieces of clarinets and saxophones. Examples include clarinets, saxophones, and some bagpipes. Her music also often features violins, cellos, flutes, trumpets, clarinets and other instruments. The keywork on instruments such as modern flutes, clarinets, or oboes is elaborate and variable. However, Tamborazo uses saxophones instead of clarinets. It prominently features a trio of clarinets (two regular clarinets and one bass clarinet) throughout. Groups of clarinets playing together have become increasingly popular among clarinet enthusiasts in recent years. For early classical music, the clarinets and/or flutes may be omitted. All-metal alto clarinets also exist. Alongside vocals, the song features musical instruments such as the piano, drums and clarinets.