Joelle Leandre . DOUBLE BASS & VOICE. D.Bass and speaking musician. Taxi! was inspired by those in Paris, but the problems are universal. An hilarious music-theatre style piece by the French virtuoso, equally successful for speaking bassist or with narrator. Recorded. This book contains pieces currently on exam syllabuses: Double Bass TG: Perf Cert Pieces are approximately Grade: 5 - 8 standard.