| Improvisation games for classical musicians: A collection of musical games with suggestions for use: For performers, instrumental teachers, music students, music therapists … J Agrell GIA Publications, 2008 | 63 | 2008 |
| Improvisation games for classical musicians: 500+ non-jazz games for performers, educators, and everyone else J Agrell Chicago: GIA, 2008 | 11 | 2008 |
| Improv games for one player: A very concise collection of musical games for one classical musician J Agrell GIA Publications, Inc, 2010 | 9 | 2010 |
| Vocal improvisation games: For singers and choral groups J Agrell, PM Ward-Steinman GIA Pub, 2014 | 7 | 2014 |
| Improv duets for classical musicians: A concise collection of musical games for two players J Agrell GIA Publications, Incorporated, 2013 | 7 | 2013 |
| Improv games for one: A very concise collection of musical games for one classical musician J Agrell Chicago, IL: GIÀ, 2009 | 4 | 2009 |
| Jazz and the Horn: Workshop: Getting Started J Agrell Brass Bulletin 42 (11), 36-40, 1983 | 4 | 1983 |
| Horn Technique: A new approach to an old instrument J Agrell Wildwind Editions, 2017 | 3 | 2017 |
| Improvised chamber music: Spontaneous chamber music games for four (or three or five) players J Agrell GIA Publications, Incorporated, 2013 | 3 | 2013 |
| Jazz and the Horn: John Clark J Agrell Brass Bulletin 52, 61-65, 1985 | 3 | 1985 |
| Jazz and the Horn: Tom Varner J Agrell Brass Bulletin 47, 55-57, 1984 | 3 | 1984 |
| Jazz and the Horn J Agrell Brass Bulletin 40, 41-45, 1982 | 3 | 1982 |
| The creative hornist: essays, rants, and odes for the classical horn player on creative music making J Agrell Wildwind Editions, 2017 | 2 | 2017 |
| Improvisation games for classical musicians: Volume II J Agrell GIA Publications, Inc, 2016 | 2 | 2016 |
| September elegy: for natural horn in E♭ and piano J Agrell JOMAR Press, 2001 | 2 | 2001 |
| Jazz and the Horn: Peter Gordon J Agrell Brass Bulletin 50, 31-34, 1985 | 2 | 1985 |
| Technique Tips: Duets-A New Pedagogical Tool J Agrell The Horn Call 37, 36-37, 0 | 2 | |
| The Arpeggio challenge J Agrell The Horn Call, 47-49, 2014 | | 2014 |
| Interview with Ricardo Matosinhos--Millennium Musician J Agrell The Horn Call, 42-45, 2014 | | 2014 |
| Improvisation Games for Classical Musicians L Jackson, J Agrell British Journal of Music Education 27 (1), 103, 2010 | | 2010 |
