Jazz musician, guitarist and teacher, Guido was born in Bari, Italy in 1964 where he currently lives.

The completion of his studies and introduction into the music world came through the help of accomplished Apulian musicians, and his first professional experiences were with his father, the crooner Nino Di Leone. Starting in 1980 he deepened his jazz studies with Tomaso Lama and attended the Siena Jazz seminars. His style grows out of his study of musicians such as Wes Montgomery, Barney Kessel, Joe Pass and Jim Hall.

The artistic projects to which he has been put to the test in the course of the years and collaboration with many musicians are multiple, almost all documented on recordings:

1990 "All for hall" (Splas(h)) A.Zanchi, E. Fioravanti, P. Fresu.
1992 "Never swingin' in the rain" (Lucas records) M. Carbonara, M. Sannini, F. Puglisi.
1993 "Scherzo" (Pentaflower) A. Zanchi, E. Fioravanti, C. Fasoli, S. Tasca.
1995 "Hearing a Rhapsody" (Modern times) A. Zanchi, M. Murphy, B. Mover, P. Arnesano,T. Ghiglioni.
1998 "Terra do sol – Abrasileirado" (Cristiani pr.) P. Arnesano, M. Rosini, P. Sebastiani, E. Falco, M. Campanale.
2000 "Con Alma" (Yvp) V. Di Modugno, M. Campanale.
2001 "Body And Soul" (Yvp) G. Bassi, M. Manzi.
2001 "Ventiseifebbraioduemilauno" (Philology) P. Arnesano.
2001 "Seven come eleven" (Yvp) Pentagramma guitar jazz orchestra.
2002 "Gianni Basso in Bari" (Yvp) G. Basso, G. Bassi, S. Tranchini.
2003 "Totò jazz" (Panastudio) E. Carucci, G. Bassi, E. Lanzo.
2004 "Isole" (Yvp) M. Lacirignola, M. Sannini, G. Bassi, M. Manzi, Ottonando brass ensemble.
2005 "Flamingo – Jazz'n Mambo" (Philology) E. Carucci, G. Bassi, E. Falco, C. Pastanella, P. Arnesano.
2006 "Duets – Tribute" (Fo(u)r) B. Middelhoff, M. Murphy, D. Moroni, A. Hermann, G. Smulyan, P. Arnesano, G. Bassi, E. Zirilli, F. Cerri, M. Tamburini, I. Coleman, G. Silveira, A. Adamo.
2006 "Walkin' ahead" (Fo(u)r) B. Middelhoff, P. Ciancaglini, A. Minetto, A. Hermann.

Participation in recordings of other artists:
1995 Tiziana Ghiglioni "Spellbound" (Yvp)
1996 Paola Arnesano "Memorie d'Italy" (Philology)
1999 Paola Arnesano "Words on piano" (Cristiani pr.)
2006 Paola Arnesano "Falando de Jobim" (Yvp)
1999 Larry Franco "Nuttin' but Nat" (Azzurra music)
2005 Larry Franco "Italian Jazz Ensemble" (Philology)
2002 Giuseppe Bassi "We'll be togheter again" (Yvp)
2004 Giuseppe Bassi "My love and I" (Philology)
2003 Marchio Bossa "Italian lounge music" (Azzurra music)
2004 Marchio Bossa "No bossa no party" (Azzurra music)
2006 Marchio Bossa "Fantasy" (Azzurra music)
2006 Nino Di Leone "Quel che non si fa più" (Fo(u)r)
2006 Francesca Leone "All the way" (Fo(u)r)
2006 Chrissie Carpenter Oppedisano "Moon stars and nights" (Philology)

Other non-recorded collaboration includes: Mal Waldron, Dave Liebman, Michele Hendricks, Bobby Durham…

Concert tours have included: Belgium, Germany, Switzerland, Ethiopia, Greece, Israel, Morocco, China, Australia and the United Emirates.

He has produced a notable artistic and cultural contribution to the city of Bari with the founding of "Il Pentagramma" music school, a strong entity which has brought forth much talent.

In 2002, Guido wrote the didactic text "Metodo facile e completo di Teoria Jazz" (Easy and Complete Methods of Jazz Theory), published by "Sinfonica Jazz"-Carisch.