Credit

• Backing Vocals - Lee Loughnane (C1, C3, D2)
• Backing Vocals - Peter Cetera (C3, D1, D2)
• Backing Vocals - Robert Lamm (C1, C3, D2)
• Backing Vocals - Terry Kath (C1, C3)
• Bass - Peter Cetera (C1, C2, D2, D3)
• Bass - Terry Kath (C4, D1, D4)
• Congas - Guille Garcia (C2, C4, D2, D4)
• Drums - Danny Seraphine
• Electric Piano [Fender Rhodes] - Robert Lamm (D2, D4)
• Guitar - Terry Kath (C1 to C4, D2, D3)
• Lead Vocals - Peter Cetera (C1, D1 to D3)
• Percussion - Laudir De Oliveira (C2, C4, D1, D2)
• Piano - Robert Lamm (C1, C2, D1)
• Producer - James William Guercio
• Synthesizer - David J. Wolinski
• Tenor Saxophone - Walter Parazaider (C1, D2 to D4)
• Trombone - James Pankow (C1, C2, D1 to D4)
• Trumpet - Lee Loughnane (C1, C2, D1 to D4)