拉着二胡唱情歌弹着古筝唱山歌
[lā zhe èr hú chàng qíng gē dàn zhe gŭ zhēng chàng shān gē]
It describes a scene where someone plays music with traditional Chinese instruments (the erhu and guzheng) while singing love songs or folk songs. It conveys the image of a blend of different musical expressions using traditional methods.